Method for Producing Titanium Complex

1. Field of the Invention

The present invention methods for producing an alkoxytitanium complex, aryloxytitanium complex and aminotitanium complex.

2. Description of the Related Art

Complexes of Group IV transition metals such as titanium, zirconium and the like are useful metal complexes used as Lewis acids in valuable reactions in organic synthesis such as transesterification reaction, Diels-Alder reaction.

Alkoxytitanium complexes, aryloxytitanium complexes and aminotitanium complexes are promising metal complexes (JP9-87313A), and development of production methods has been desired.

An object of the present invention is to provide industrially advantageous methods for producing an alkoxytitanium complex, aryloxytitanium complex and aminotitanium complex.

The present inventors have been intensively studied to accomplish the above-described object, and as a result, found industrially advantageous methods for producing an alkoxytitanium complex, aryloxytitanium complex and aminotitanium complex having catalytic activity as Lewis acids in valuable reactions in organic synthesis, completing the present invention.

The present invention provides:

1. A method for producing an alkoxytitanium complex represented by the general formula (I), ##STR2## wherein Cp is a group having cyclopentadiene-type anion skeleton, A represents a carbon atom or silicon atom,

R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently represent:

a hydrogen atom;

a halogen atom;

an alkyl group having 1 to 10 carbon atoms which may be substituted by fluorine,

an alkoxy group having 1 to 10 carbon atoms which may be substituted by fluorine;

an aryl group having 6 to 20 carbon atoms which may be substituted by fluorine;

an aryloxy group having 6 to 20 carbon atoms which may be substituted by fluorine;

an aralkyl group having 7 to 20 carbon atoms which may be substituted by fluorine;

an aralkyloxy group having 7 to 20 carbon atoms which may be substituted by fluorine;

a hydrocarbon-substituted silyl group having 1 to 20 carbon atoms; or

a hydrocarbon-substituted amino group having 1 to 20 carbon atoms,

R.sup.5 and R.sup.6 each independently represent:

a hydrogen atom;

an alkyl group having 1 to 10 carbon atoms which optionally may be substituted by fluorine;

an alkoxy group having 1 to 10 carbon atoms which may be substituted by fluorine;

an aryl group having 6 to 20 carbon atoms which may be substituted by fluorine,

an aryloxy group having 6 to 20 carbon atoms which may be substituted by fluorine,

an aralkyl group having 7 to 20 carbon atoms which may be substituted by fluorine;

an aralkyloxy group having 7 to 20 carbon atoms which may be substituted by fluorine;

a hydrocarbon-substituted silyl group having 1 to 20 carbon atoms; or

a hydrocarbon-substituted amino group having 1 to 20 carbon atoms; and

R.sup.7 is the same or different and each independently represent:

an alkyl group having 1 to 10 carbon atoms which may be substituted; or

an aralkyl group having 7 to 20 carbon atoms which may be substituted; or

R.sup.7 groups may bond each other to form a ring, which comprises reacting:

a halogenated titanium complex represented by the general formula (II) ##STR3## wherein, Cp, A, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same as defined above,and X.sup.1 and X.sup.2 each independently represent a halogen atom;

with an alkali metal alkoxide of the formula (III);

wherein R.sup.7 is the same as defined above and M represents an alkali metal.

2. The method according to Item 1, which comprises: reacting a halogenated titanium complex of the formula (II) with an alcohol of the formula (III') :

wherein R.sup.7 is the same as defined above.

3. The production method according as defined in item 2 above, wherein the reaction is conducted in the co-existence of an amine;

4. A method for producing an aryloxytitanium complex represented by the general formula (IV): ##STR4## wherein Cp, A, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 have respectively the same meanings as defined above; and

Ar is the same or different and each represents an aryl group having 6 to 20 carbon atoms which may be substituted, or Ars may bond mutually to form a ring,

which comprises reacting a halogenated titanium complex represented by the general formula (II) as defined in item 1 above with an alkali metal aryloxide represented by the general formula (V):

wherein M represents an alkali metal atom, and Ar is the same as defined above; and

5. A method for producing an aminotitanium complex represented by the general formula (VI): ##STR5## wherein Cp, A, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 have respectively the same meanings as defined above, and

R.sup.9 and R.sup.10 each independently represent an alkyl group having 1 to 10 carbon atoms which may be substituted,

an aralkyl group having 7 to 20 carbon atoms which may be substituted or

a silyl group having 1 to 20 carbon atoms which may be substituted, or

R.sup.9 and R.sup.10 may bond each other to form a ring,

which comprises reacting a halogenated titanium complex represented by the general formula (II) as define above with an alkali metal amide represented by the general formula (VII):

wherein M represents an alkali metal atom, and R.sup.9 and R.sup.10 are the same as defined above.

The present invention will be described in detail below.

Examples of the group having cyclopentadiene-type anion skeleton represented as a substituent Cp in the alkoxytitanium complex (I), the aryloxytitanium complex (IV) and the aminotitanium complex (VI) include: an optionally substituted cyclopentadienyl group, an optionally substituted indenyl group and an optionally substituted fluorenyl group.

The optionally substituted cyclopentadienyl group may be substituted with at least one group selected from: a C1-C10 alkyl group, a phenyl group, a naphthyl group, a silyl group substituted with three groups selected from C1-C4 alkyl group and a phenyl group, and two adjacent C1-C10 alkyl groups may bond together at their terminals to form a tetramethylene group.

The optionally substituted indenyl group may be substituted with at lest one group selected from: a C1-C10 alkyl group, a phenyl group and a naphthyl group.

The optionally substituted fluorenyl group may be substituted with at lest one group group selected from: a C1-C12 alkyl group, a phenyl group and a naphthyl group.

Examples of the optionally substituted cyclopentadienyl groups include: a .eta.5-cyclopentadienyl group, .eta.5-methylcyclopentadienyl group, .eta.5-dimethylcyclopentadienyl group, .eta.5-trimethylcyclopentadienyl group, .eta.5-tetramethylcyclopentadienyl group, .eta.5-ethylcyclopentadienyl group, .eta.5-n-propylcyclopentadienyl group, .eta.5-isopropylcyclopentadienyl group, .eta.5-n-butylcyclopentadienyl group, .eta.5-sec-butylcyclopentadienyl group, .eta.5-tert-butylcyclopentadienyl group, .eta.5-n-pentylcyclopentadienyl group, .eta.5-neopentylcyclopentadienyl group, .eta.5-n-hexylcyclopentadienyl group, .eta.5-n-octylcyclopentadienyl group, .eta.5-tetrahydroindenyl group, .eta.5-octahydrofluorenyl group, .eta.5-phenylcyclopentadienyl group, .eta.5-naphthylcyclopentadienyl group, .eta.5-trimethylsilylcyclopentadienyl group, .eta.5-triethylsilylcyclopentadienyl group, .eta.5-triphenylsilylcyclopentadienyl group, .eta.5-tert-butyldimethylsilylcyclopentadienyl group and the like;

Examples of the optionally substituted indenyl groups include: a .eta.5-indenyl group, .eta.5-methylindenyl group, .eta.5-dimethylindenyl group, .eta.5-ethylindenyl group, .eta.5-n-propylindenyl group, .eta.5-isopropylindenyl group, .eta.5-n-butylindenyl group, .eta.5-sec-butylindenyl group, .eta.5-tert-butylindenyl group, .eta.5-n-pentylindenyl group, .eta.5-neopentylindenyl group, .eta.5-n-hexylindenyl group, .eta.5-n-octylindenyl group, .eta.5-n-decylindenyl group, .eta.5-phenylindenyl group, .eta.5-methylphenylindenyl group, .eta.5-naphthylindenyl group and the like,

Examples of the optionally substituted fluorenyl group include: a .eta.5-fluorenyl group, .eta.5-methylfluorenyl group, .eta.5-dimethylfluorenyl group, .eta.5-ethylfluorenyl group, .eta.5-diethylfluorenyl group, .eta.5-n-propylfluorenyl group, .eta.5-di-n-propylfluorenyl group, .eta.5-isopropylfluorenyl group, .eta.5-diisopropylfluorenyl group, .eta.5-n-butylfluorenyl group, .eta.5-sec-butylfluorenyl group, .eta.5-tert-butylfluorenyl group, .eta.5-di-n-butylfluorenyl group, .eta.5-di-sec-butylfluorenyl group, .eta.5-di-tert-butylfluorenyl group, .eta.5-n-pentylfluorenyl group, .eta.5-neopentylfluorenyl group, .eta.5-n-hexylfluorenyl group, .eta.5-n-octylfluorenyl group, .eta.5-n-decylfluorenyl group, .eta.5-n-dodecylfluorenyl group, .eta.5-phenylfluorenyl group, .eta.5-di-phenylfluorenyl group, .eta.5-methylphenylfluorenyl group, .eta.5-naphthylfluorenyl group and the like, and preferably examples thereof include a .eta.5-cyclopentadienyl group, .eta.5- methylcyclopentadienyl group, .eta.5-tert-butylcyclopentadienyl group, .eta.5-tetramethylcyclopentadienyl group, .eta.5-indenyl group, .eta.5-fluorenyl group and the like.

Examples of the halogen in the substituents R.sup.1, R.sup.2, R.sup.3 and R.sup.4 include fluorine, chlorine, bromine and iodine atoms and the like.

Examples of the alkyl group having 1 to 10 carbon atoms which may be substituted by fluorine in the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 include a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, neopentyl group, amyl group, n-hexyl group, n-octyl group, n-decyl group, fluoromethyl group, difluoromethyl group, trifluoromethyl group, fluoroethyl group, difluoroethyl group, trifluoroethyl group, tetrafluoroethyl group, pentafluoroethyl group, perfluoropropyl group, perfluorobutyl group, perfluoropentyl group, perfluorohexyl group, perfluorooctyl group, perfluorodecyl group and the like, and preferable examples thereof include a methyl group, ethyl group, isopropyl group, tert-butyl group and amyl group.

Examples of the alkoxy group having 1 to 10 carbon atoms which may be substituted by fluorine in the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 include a methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, sec-butoxy group, tert-butoxy group, n-pentoxy group, neopentoxy group, n-hexoxy group, n-octoxy group, n-dexoxy group, and fluorine atom-substituted alkoxy groups thereof, and preferable examples thereof include a methoxy group, ethoxy group and tert-butoxy group.

Examples of the aryl group having 6 to 20 carbon atoms which may be substituted by fluorine in the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 include a phenyl group, 2-tolyl group, 3-tolyl group, 4-tolyl group, 2,3-xylyl group, 2,4-xylyl group, 2,5-xylyl group, 2,6-xylyl group, 3,4-xylyl group, 3,5-xylyl group, 2,3,4-trimethylphenyl group, 2,3,5-trimethylphenyl group, 2,3,6-trimethylphenyl group, 2,4,6-trimethylphenyl group, 3,4,5-trimethylphenyl group, 2,3,4,5-tetramethylphenyl group, 2,3,4,6-tetramethylphenyl group, 2,3,5,6-tetramethylphenyl group, pentamethylphenyl group, ethylphenyl group, n-propylphenyl group, isopropylphenyl group, n-butylphenyl group, sec-butylphenyl group, tert-butylphenyl group, n-pentylphenyl group, neopentylphenyl group, n-hexylphenyl group, n-octylphenyl group, n-decylphenyl group, n-dodecylphenyl group, n-tetradecylphenyl group, naphthyl group, anthracenyl group and fluorine atom- substituted aryl groups thereof. Among them, a phenyl group is preferred.

Examples of the aryloxy group having 6 to 20 carbon atoms which may be substituted by fluorine in the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 include a phenoxy group, 2-methylphenoxy group, 3-methylphenoxy group, 4-methylphenoxy group, 2,3-dimethylphenoxy group, 2,4-dimethylphenoxy group, 2,5-dimethylphenoxy group, 2,6-dimethylphenoxy group, 3,4-dimethylphenoxy group, 3,5-dimethylphenoxy group, 2,3,4-trimethylphenoxy group, 2,3,5-trimethylphenoxy group, 2,3,6-trimethylphenoxy group, 2,4,5-trimethylphenoxy group, 2,4,6-trimethylphenoxy group, 3,4,5-trimethylphenoxy group, 2,3,4,5-tetramethylphenoxy group, 2,3,4,6-tetramethylphenoxy group, 2,3,5,6-tetramethylphenoxy group, pentamethylphenoxy group, ethylphenoxy group, n-propylphenoxy group, isopropylphenoxy group, n-butylphenoxy group, sec-butylphenoxy group, tert-butylphenoxy group, n-hexylphenoxy group, n-octylphenoxy group, n-decylphenoxy group, n-tetradecylphenoxy group, naphtoxy group, anthracenoxy group and fluorine-substituted aryloxy groups thereof.

Examples of the aralkyl group having 7 to 20 carbon atoms which may be substituted by fluorine in the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 include a benzyl group, (2-methylphenyl)methyl group, (3-methylphenyl)methyl group, (4-methylphenyl)methyl group, (2,3-dimethylphenyl)methyl group, (2,4-dimethylphenyl)methyl group, (2,5-dimethylphenyl)methyl group, (2,6-dimethylphenyl)methyl group, (3,4-dimethylphenyl)methyl group, (2,3,4-trimethylphenyl)methyl group, (2,3,5-trimethylphenyl)methyl group, (2,3,6-trimethylphenyl)methyl group, (3,4,5-trimethylphenyl)methyl group, (2,4,6-trimethylphenyl)methyl group, (2,3,4,5-tetramethylphenyl)methyl group, (2,3,4,6-tetramethylphenyl)methyl group, (2,3,5,6-tetramethylphenyl)methyl group, (pentamethylphenyl)methyl group, (ethylphenyl)methyl group, (n-propylphenyl)methyl group, (isopropylphenyl)methyl group, (n-butylphenyl)methyl group, (sec-butylphenyl)methyl group, (tert-butylphenyl)methyl group, (n-pentylphenyl)methyl group, (neopentylphenyl)methyl group, (n-hexylphenyl)methyl group, (n-octylphenyl)methyl group, (n-decylphenyl)methylgroup, (n-dodecylphenyl)methylgroup, (n-tetradecylphenyl)methyl group, naphthylmethyl group, anthracenylmethyl group and fluorine atom-substituted aralkyl groups thereof, and a benzyl group is preferable.

Examples of the aralkyloxy group having 7 to 20 carbon atoms which may be substituted by fluorine in the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 include a benzyloxy group, (2-methylphenyl)methoxy group, (3-methylphenyl)methoxy group, (4-methylphenyl)methoxy group, (2,3-dimethylphenyl)methoxy group, (2,4-dimethylphenyl)methoxy group, (2,5-dimethylphenyl)methoxy group, (2,6-dimethylphenyl)methoxy group, (3,4-dimethylphenyl)methoxy group, (2,3,4-trimethylphenyl)methoxy group, (2,3,5-trimethylphenyl)methoxy group, (2,3,6-trimethylphenyl) meth oxy group, (3,4,5-trimethylphenyl)methoxy group, (2,4,6-trimethylphenyl)methoxy group, (2,3,4,5-tetramethylphenyl)methoxy group, (2,3,4,6-tetramethylphenyl)methoxy group, (2,3,5,6-tetramethylphenyl)methoxy group, (pentamethylphenyl)methoxy group, (ethylphenyl)methoxy group, (n-propylphenyl)methoxy group, (isopropylphenyl)methoxy group, (n-butylphenyl)methoxy group, (sec-butylphenyl)methoxy group, (tert-butylphenyl)methoxy group, (n-pentylphenyl)methoxy group, (neopentylphenyl)methoxy group, (n-hexylphenyl)methoxy group, (n-octylphenyl)methoxy group, (n-decylphenyl)methoxy group, (n-dodecylphenyl)methoxy group, (n-tetradecylphenyl)methoxy group, naphthylmethoxy group, anthracenylmethoxy group and fluorine atom-substituted aralkyloxy groups thereof, and a benzyloxy group is preferable.

The hydrocarbon-substituted silyl group having 1 to 20 carbon atoms in the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 is a silyl group substituted by a hydrocarbon having 1 to 20 carbon atoms, and examples of the hydrocarbon group include alkyl groups having 1 to 10 carbon atoms such as a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, neopentyl group, amyl group, n-hexyl group, cyclohexyl group, n-octyl group, n-decyl group and the like, aryl groups having 1 to 20 carbon atoms such as a phenyl group, tolyl group, xylyl group, naphthyl group, anthracenyl group, and the like.

Examples of such a hydrocarbon-substituted silyl group having 1 to 20 carbon atoms include mono-substituted silyl groups such as a methylsilyl group, ethylsilyl group, phenylsilyl group and the like, di-substituted silyl groups such as a dimethylsilyl group, diethylsilyl group, diphenylsilyl group and the like, tri-substituted silyl groups such as a trimethylsilyl group, triethylsilyl group, tri-n-propylsilyl group, tri-isopropylsilyl group, tri-n-butylsilyl group, tri-sec-butylsilyl group, tri-tert-butylsilyl group, tri-isobutylsilyl group, tert-butyldimethylsilyl group, tri-n-pentylsilyl group, tri-n-hexylsilyl group, tricyclohexylsilyl group, triphenylsilyl group, and the like, and preferable examples thereof include a trimethylsilyl group, tert-butyldimethylsilyl group, and triphenylsilyl group. Any of these substituted silyl groups may have substitution by a fluorine atom on a hydrocarbon group thereof.

The hydrocarbon-substituted amino group having 1 to 20 carbon atoms in the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 is an amino group substituted by two hydrocarbon groups, and examples of the hydrocarbon group include alkyl groups having 1 to 10 carbon atoms such as a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, neopentyl group, amyl group, n-hexyl group, cyclohexyl group, n-octyl group, n-decyl group and the like, aryl groups having 1 to 20 carbon atoms such as a phenyl group, tolyl group, xylyl group, naphthyl group, anthracenyl group, and the like. Examples of such a hydrocarbon-substituted amino group having 1 to 20 carbon atoms include a dimethylamino group, diethylamino group, di-n-propylamino group, diisopropylamino group, di-n-butyl amino group, di-sec-butylamino group, di-tert-butylamino group, di-isobutylamino group, tert-butylisopropylamino group, di-n-hexylamino group, di-n-octylaminogroup, di-n-decylamino group, diphenylamino group and the like, and a dimethylamino group and a diethylamino group are preferably listed.

Examples of the alkyl group having 1 to 10 carbon atoms which may be substituted in the substituents R.sup.7 include alkyl groups such as a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, neopentyl group, amyl group, n-hexyl group, n-octyl group, n-decyl group and the like, halogenated alkyl groups such as a chloromethyl group, dichloromethyl group, trichloromethyl group, bromomethyl group, dibromomethyl group, tribromomethyl group, fluoromethyl group, difluoromethyl group, trifluoromethyl group, fluoroethyl group, difluoroethyl group, trifluoroethyl group, tetrafluoroethyl group, pentafluoroethyl group, perfluoropropyl group, hexafluoroisopropyl group, perfluorobutyl group, perfluoropentyl group, perfluorohexyl group, perfluorooctyl group, perfluorodecyl group and the like, and alkoxyalkyl groups such as a methoxymethyl group, ethoxymethyl group, n-propoxymethyl group, isopropoxymethyl group, phenoxymethyl group, methoxyethyl group, ethoxyethyl group, n-propoxyethyl group, isopropoxyethyl group, phenoxyethyl group and the like, and preferably examples thereof include a methyl group, ethyl group, isopropyl group, hexafluoroisopropyl group and methoxyethyl group.

Examples of the aralkyl group having 7 to 20 carbon atoms whichmaybe substituted in the substituent R.sup.7 include a benzyl group, (2-methylphenyl)methyl group, (3-methylphenyl)methyl group, (4-methylphenyl)methyl group, (2,3-dimethylphenyl)methyl group, (2,4-dimethylphenyl)methyl group, (2,5-dimethylphenyl)methyl group, (2,6-dimethylphenyl)methyl group, (3,4-dimethylphenyl)methyl group, (2,3,4-trimethylphenyl)methyl group, (2,3,5-trimethylphenyl)methyl group, (2,3,6-trimethylphenyl)methyl group, (3,4,5-trimethylphenyl)methyl group, (2,4,6-trimethylphenyl)methyl group, (2,3,4,5-tetramethylphenyl)methyl group, (2,3,4,6-tetramethylphenyl)methyl group, (2,3,5,6-tetramethylphenyl)methyl group, (pentamethylphenyl)methyl group, (ethylphenyl)methyl group, (n-propylphenyl)methyl group, (isopropylphenyl)methyl group, (n-butylphenyl)methyl group, (sec-butylphenyl)methyl group, (tert-butylphenyl)methyl group, (n-pentylphenyl)methyl group, (neopentylphenyl)methyl group, (n-hexylphenyl)methyl group, (n-octylphenyl)methyl group, (n-decylphenyl)methylgroup, (n-dodecylphenyl)methylgroup, (n-tetradecylphenyl)methyl group, naphthylmethyl group, anthracenylmethyl group, 1-phenylethyl group, 1-(1-naphthyl)ethyl group, 1-(2-naphthyl)ethyl group; haloaralkyl groups obtained by substitution by halogen such as a fluorine atom, chlorine atom, iodine atom or the like on the above-described groups; alkoxyaralkyl groups obtained by optional substitution by a methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, sec-butoxy group, tert-butoxy group and the like of a halogen atom on the above-described haloaralkyl groups; and a cyanoaralkyl group, nitroaralkyl group and the like. Among them, a benzyl group is preferred.

Two R.sup.7 groups may bond mutually to form a ring, and examples thereof include 1,2-dioxy groups such as an ethylenedioxy group, methylethylenedioxy group, 1,1-dimethylethylenedioxy group, 1,2-dimethylethylenedioxy group, 1,1,2-trimethylethylenedioxy group, tetramethylethylenedioxy group, phenylethylenedioxy group, 1,1-diphenylethylenedioxy group, 1,2-diphenylethylenedioxy group, 1,1,2-triphenylethylenedioxy group, tetraphenylethylenedioxy group, cyclobutane-1,2-dioxy group, cyclopentane-1,2-dioxy group, cyclohexane-1,2-dioxy group, cycloheptane-1,2-dioxy group, cyclooctane-1,2-dioxy group and the like,

1,3-dioxy groups such as a propylene-1,3-dioxy group, 1-methylpropylene-1,3-dioxy group, 2-methylpropylene-1,3-dioxy group, 1,1-dimethylpropylene-1,3-dioxy group, 1,2-dimethylpropylene-1,3-dioxy group, 1,3-dimethylpropylene-1,3-dioxy group, 2,2-dimethylpropylene-1,3-dioxy group, 1,1,2-trimethylpropylenedioxy group, 1,1,3-trimethylpropylenedioxy group, 1,2,2-trimethylpropylenedioxy group, 1,2,3-trimethylpropylenedioxy group, 1,1,2,2-tetramethylpropylenedioxy group, 1,1,2,3-tetrapethylpropylenedioxy group, 1,2,2,3-tetramethylpropylenedioxy group, 1,1,2,3-tetramethylpropylenedioxy group, 1,1,2,2,3-tetramethylpropylenedioxy group, 1,1,2,3,3-pentamethylpropylenedioxy group, 1,1,2,2,3,3-hexamethylpropylenedioxy group, 1-phenylpropylene-1,3-dioxy group, 2-phenylpropylene-1,3-dioxy group, 1,1-diphenylpropylene-1,3-dioxy group, 1,2-diphenylpropylene-1,3-dioxy group, 1,3-diphenylpropylene-1,3-dioxy group, 2,2-diphenylpropylene-1,3-dioxy group, 1,1,2-triphenylpropylenedioxy group, 1,1,3-triphenylpropylenedioxy group, 1,2,2-triphenylpropylenedioxy group, 1,2,3-triphenylpropylenedioxy group, 1,1,2,2-tetraphenylpropylenedioxy group, 1,1,2,3-tetraphenylpropylenedioxy group, 1,1,3,3-tetraphenylpropylenedioxy group, 1,2,2,3-tetraphenylpropylenedioxy group, 1,1,2,2,3-pentaphenylpropylenedioxy group, 1,1,2,3,3-pentaphenylpropylenedioxy group, 1,1,2,2,3,3-hexaphenylpropylenedioxy group and the like, and also stereo and optical isomers thereof.

Examples of the aryl group having 6 to 20 carbon atoms which may be substituted, represented by Ar, in the alkali metal aryloxides (V) and the aryloxytitanium complex (IV) include a phenyl group, 2-methylphenyl group, 3-methylphenyl group, 4-methylphenyl group, 2,3-dimethylphenyl group, 2,4-dimethylphenyl group, 2,5-dimethylphenyl group, 2,6-dimethylphenyl group, 3,4-dimethylphenyl group, 2,3,4-trimethylphenyl group, 2,3,5-trimethylphenyl group, 2,3,6-trimethylphenyl group, 3,4,5-trimethylphenyl group, 2,4,6-trimethylphenyl group, 2,3,4,5-tetramethylphenyl group, 2,3,4,6-tetramethylphenyl group, 2,3,5,6-tetramethylphenyl group, pentamethylphenyl group, ethylphenyl group, n-propylphenyl group, isopropylphenyl group, n-butylphenyl group, sec-butylphenyl group, tert-butylphenyl group, n-pentylphenyl group, neopentylphenyl group, n-hexylphenyl group, n-octylphenyl group, n-decylphenyl group, n-dodecylphenyl group, n-tetradecylphenyl group, naphthyl group, anthracenyl group; haloaryl groups obtained by substitution by halogen such as a fluorine atom, chlorine atom, iodine atom or the like on the above-described groups; alkoxyaryl groups obtained by optional substitution by a methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, sec-butoxy group, tert-butoxy group and the like of a halogen atom on the above-described haloaralkyl groups; and a cyanoaryl group, nitroaryl group and the like, and preferable examples thereof include a phenyl group, 4-methylphenyl group and 2,4,6-trimethylphenyl group.

The substituents Ars may bond each other to form a ring, and examples thereof include biaryl groups and cross-linked biaryl groups such as a 1,1'-biphenyl-2,2'-diyl group, 1,1'-biphenyl-4,4'-dimethyl-2,2'-diyl group, 1,1'-biphenyl-6,6'-dimethyl-2,2'-diyl group, 1,1'-biphenyl-3,3'-di-tert-butyl-2,2'-diyl group, 1,1'-binaphthyl-2,2'-diyl group, 1,1'-binaphthyl-3,3'-bis(trimethylsilyl)-2,2'-diyl group, 1,1'-thiobiphenyl-2,2'-diyl group, 1,1'-thiobiphenyl-5,5'-dimethyl-2,2'-diyl group, 1,1'-thiobiphenyl-3,3'-di-tert-butyl-5,5'-dimethyl-2,2'-diyl group, 1,1'-methylenebiphenyl-2,2'-diyl group, 1,1'-methylenebiphenyl-5,5'-dimethyl-2,2'-diyl group, 1,1'-methylenebiphenyl-3,3'-di-tert-butyl-5,5'-dimethyl-2,2'-diyl group, 1,1'-phenylphosphinobiphenyl-2,2'-diyl group, 1,1'-phenylphosphinobiphenyl-5,5'-dimethyl-2,2'-diyl group, 1,1'-phenylphosphinobiphenyl-3,3'-di-tert-butyl-5,5'-dimethyl-2,2'-diyl group and the like, and preferable are 1,1'-biphenyl-2,2'-diyl group and 1,1'-binaphthyl-2,2'-diyl group.

Examples of the alkyl group having 1 to 10 carbon atoms which may be substituted in the substituents R.sup.9 and R.sup.10 in the alkali metal amides (VII) and the aminotitanium complex (VI) include alkyl groups such as a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, neopentyl group, amyl group, n-hexyl group, n-octyl group, n-decyl group and the like, halogenated alkyl groups such as a chloromethyl group, dichloromethyl group, trichloromethyl group, bromomethyl group, dibromomethyl group, tribromomethyl group, fluoromethyl group, difluoromethyl group, trifluoromethyl group, fluoroethyl group, difluoroethyl group, trifluoroethyl group, tetrafluoroethyl group, pentafluoroethyl group, perfluoropropyl group, hexafluoroisopropyl group, perfluorobutyl group, perfluoropentyl group, perfluorohexyl group, perfluorooctyl group, perfluorodecyl group and the like, and alkoxyalkyl groups such as a methoxymethyl group, ethoxymethyl group, n-propoxymethyl group, isopropoxymethyl group, phenoxymethyl group, methoxyethyl group, ethoxyethyl group, n-propoxyethyl group, isopropoxyethyl group, phenoxyethyl group and the like, and preferably examples thereof include a methyl group, ethyl group, isopropyl group, and methoxyethyl group.

Examples of the aralkyl group having 7 to 20 carbon atoms which may be substituted in the substituents R.sup.7 include a benzyl group, (2-methylphenyl)methyl group, (3-methylphenyl)methyl group, (4-methylphenyl)methyl group, (2,3-dimethylphenyl)methyl group, (2,4-dimethylphenyl)methyl group, (2,5-dimethylphenyl)methyl group, (2,6-dimethylphenyl)methyl group, (3,4-dimethylphenyl)methyl group, (2,3,4-trimethylphenyl)methyl group, (2,3,5-trimethylphenyl)methyl group, (2,3,6-trimethylphenyl)methyl group, (3,4,5-trimethylphenyl)methyl group, (2,4,6-trimethylphenyl)methyl group, (2,3,4,5-tetramethylphenyl)methyl group, (2,3,4,6-tetramethylphenyl)methyl group, (2,3,5,6-tetramethylphenyl)methyl group, (pentamethyphenyl)methyl group, (ethylphenyl)methyl group, (n-propylphenyl)methyl group, (isopropylphenyl)methyl group, (n-butylphenyl)methyl group, (sec-butylphenyl)methyl group, (tert-butylphenyl)methyl group, (n-pentylphenyl)methyl group, (neopentylphenyl)methyl group, (n-hexylphenyl)methyl group, (n-octylphenyl)methyl group, (n-decylphenyl)methyl group, (n-dodecylphenyl)methyl group, (n-tetradecylphenyl)methyl group, naphthylmethyl group, anthracenylmethyl group, 1-phenylethyl group, 1-(1-naphthyl)ethyl group, 1-(2-naphthyl)ethyl group; haloaralkyl groups obtained by substitution by halogen such as a fluorine atom, chlorine atom, iodine atom or the like on the above-described groups; alkoxyaralkyl groups obtained by optional substitution by a methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, sec-butoxy group, tert-butoxy group and the like of a halogen atom on the above-described haloaralkyl groups; and a cyanoaralkyl group, nitroaralkyl group and the like. Among them, a benzyl group is preferred.

The hydrocarbon-substituted silyl group having 1 to 20 carbon atoms which may be substituted in the substituents R.sup.9 and R.sup.10 is a silyl group substituted by a hydrocarbon group having 1 to 20 carbon atoms, and examples of the hydrocarbon group include alkyl groups having 1 to 10 carbon atoms such as a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, neopentyl group, amyl group, n-hexyl group, cyclohexyl group, n-octyl group, n-decyl group and the like, aryl groups having 1 to 20 carbon atoms such as a phenyl group, tolyl group, xylyl group, naphthyl group, anthracenyl group, and the like. Examples of such a hydrocarbon-substituted silyl group having 1 to 20 carbon atoms include mono-substituted silyl groups such as a methylsilyl group, ethylsilyl group, phenylsilyl group and the like, di-substituted silyl groups such as a dimethylsilyl group, diethylsilyl group, diphenylsilyl group and the like, tri-substituted silyl groups such as a trimethylsilyl group, triethylsilyl group, tri-n-propylsilyl group, tri-isopropylsilyl group, tri-n-butylsilyl group, tri-sec-butylsilyl group, tri-tert-butylsilyl group, tri-isobutylsilyl group, tert-butyldimethylsilyl group, tri-n-pentylsilyl group, tri-n-hexylsilyl group, tricyclohexylsilyl group, triphenylsilyl group, and the like, and preferable examples thereof include a trimethylsilyl group, tert-butyldimethylsilyl group, and triphenylsilyl group.

Examples of the alkoxytitanium complex (I) in which A represents a carbon atom obtained according to the present invention include (.eta.5-cyclopentadienyl)(2-phenoxy)methanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)met hanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)methanetitan ium dimethoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylmethanet itanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylmethane titanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylmethanet itanium dimethoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylmeth anetitanium dimethoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylmethanet itanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylmethane titanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylmethanet itanium dimethoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylmethanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylmeth anetitanium dimethoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)methanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methan etitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)methanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)methanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methan etitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)methanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetit anium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)methanetitanium dimethoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylmethanetitan ium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy) dimethylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy) dimethylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy) dimethylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylmethanetitanium dimethoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmet hanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylmethanetitanium dimethoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylmethanetitan ium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylme thanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylmethanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylmethanetitanium dimethoxide,

(.eta.5-3-methyllcyclopentadienyl)(2-phenoxy)methanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanet itanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methane titanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanet itanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)methanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)meth anetitanium dimethoxide,

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethaneti tanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethyl methanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethy lmethanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethaneti tanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethyl methanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitani um dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)dimethylmethanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dime thylmethanetitanium dimethoxide,

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)diphenylmathanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmathaneti tanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenyl mathanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dipheny lmathanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmathaneti tanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenyl mathanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmathanetitani um dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)diphenylmathanetitanium dimethoxide, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diph enylmathanetitanium dimethoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)methanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy) methanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)meth anetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)met hanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitani um dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)meth anetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)methanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) methanetitanium dimethoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmetha netitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmetha netitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethaneti tanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylmethanetitanium dimethoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmetha netitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmetha netitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethaneti tanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylmethanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylmethanetitanium dimethoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)methanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanetitanium( ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methanetitanium (ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanetitanium( ethylene dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)met hanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)methanetitan ium(ethylene dioxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylmethanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethanetitanium(e thylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylmethanet itanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylmethane titanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethanetitanium(e thylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylmethanet itanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitanium(ethyl ene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylmethanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylmeth anetitanium(ethylene dioxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylmethanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethanetitanium(e thylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylmethanet itanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylmethane titanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethanetitanium(e thylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylmethanet itanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitanium(ethyl ene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylmethanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylmeth anetitanium(ethylene dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)methanetitanium(ethy lene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methan etitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)methanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)methanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methan etitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)methanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetit anium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)methanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)methanetitanium(ethylene dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylmethanetitan ium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylme thanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylmethanetitanium(ethylene dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylmethanetitan ium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylme thanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylmethanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylmethanetitanium(ethylene dioxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)methanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium(e thylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanet itanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methane titanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium(e thylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanet itanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium(ethyl ene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)methanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)meth anetitanium(ethylene dioxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium(ethylen e dioxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethaneti tanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethyl methanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethy lmethanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethaneti tanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethyl methanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitani um(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)dimethylmethanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dime thylmethanetitanium(ethylene dioxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)diphenylmethanetitanium(ethylen e dioxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethaneti tanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenyl methanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dipheny lmethanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethaneti tanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenyl methanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitani um(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)diphenylmethanetitanium(ethylene dioxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diph enylmethanetitanium(ethylene dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)methanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitani um(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)meth anetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)met hanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitani um(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)meth anetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium(e thylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)methanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) methanetitanium(ethylene dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium(eth ylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmetha netitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylmethanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylmethanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmetha netitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylmethanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethaneti tanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylmethanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylmethanetitanium(ethylene dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylmethanetitanium(eth ylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmetha netitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylmethanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylmethanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmetha netitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylmethanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethaneti tanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylmethanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylmethanetitanium(ethylene dioxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitaniumbis(hexafl uoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanetitaniumb is(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methanetitanium bis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitaniumbis(hexafl uoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanetitaniumb is(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)met hanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)methanetitan iumbis(hexafluoro isopropoxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethanetitaniumbi s(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylmethanet itaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylmethane titaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethanetitaniumbi s(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylmethanet itaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitaniumbis(he xafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylmeth anetitaniumbis(hexafluoro isopropoxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethanetitaniumbi s(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylmethanet itaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylmethane titaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-5 phenoxy)diphenylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylmethanet itaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitaniumbis(he xafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylmeth anetitaniumbis(hexafluoro isopropoxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(h exafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methan etitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methan etitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetit aniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)methanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylmethanetitan iumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylme thanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylmethanetita niumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylme thanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylmethanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitaniumbi s(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanet itaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methane titaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitaniumbi s(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanet itaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbis(he xafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)meth anetitaniumbis(hexafluoro isopropoxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis(hexa fluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethaneti taniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethyl methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethy lmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethaneti taniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethyl methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitani umbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)dimethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dime thylmethanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)diphenylmethanetitaniumbis(hexa fluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethaneti taniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenyl methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dipheny lmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethaneti taniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenyl methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitani umbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)diphenylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diph enylmethanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(hexafluo ro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitani umbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)meth anetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)met hanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitani umbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)meth anetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbi s(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)methanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) methanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis( hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmetha netitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmetha netitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethaneti taniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylmethanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylmethanetitaniumbis( hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmetha netitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylmethanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylmethanetitaniumbis (hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy) diphenylmethanetitaniumbis (hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy) diphenylmethanetitaniumbis (hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy) diphenylmethanetitaniumbis (hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy) diphenylmethanetitaniumbis (hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylmethanetitaniumbis(hexafluoro isopropoxide),

and compounds obtained by substituting .eta.5-2-methylcyclopentadienyl, .eta.5-2-tert-butylcyclopentadienyl, .eta.5-2-n-butylcyclopentadienyl, .eta.5-3-n-butylcyclopentadienyl, .eta.5-indenyl, .eta.5-fluorenyl for .eta.5-cyclopentadienyl on the above-described compounds, further, compounds obtained by substituting diethoxide, dipropoxide, diisopropoxide, dibutoxide, 1,2-diphenylethylene dioxide, cyclohexane-1,2-dioxide, dibenzyl oxide and the like for dimethoxide on the above-described compounds; and the like.

Examples of the alkoxytitanium complex (I) in which A represents a silicon atom obtained according to the present invention include (.eta.5-cyclopentadienyl)(2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilaneti tanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanet itanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilaneti tanium dimethoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium dimethoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilaneti tanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanet itanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilaneti tanium dimethoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylsilanetitanium dimethoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium dimethoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylsilanetitani um dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsi lanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylsilanetitanium dimethoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylsilanetitani um dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsi lanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylsilanetitanium dimethoxide,

(.eta.5-indenyl)(2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsila netitanium dimethoxide, (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium dimethoxide , (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-indenyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium dimethoxide, (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsilanetitaniu m dimethoxide,

(.eta.5-indenyl)(2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsila netitanium dimethoxide, (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium dimethoxide , (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-indenyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium dimethoxide, (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsilanetitaniu m dimethoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilan etitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilan etitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetit anium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylsilanetitanium dimethoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilan etitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilan etitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetit anium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylsilanetitanium dimethoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylsilanetitanium dimethoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium(et hylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilaneti tanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanet itanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium(et hylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilaneti tanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium(ethyle ne dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylsilanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium(ethylene dioxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium(et hylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilaneti tanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanet itanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium(et hylene dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilaneti tanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium(ethyle ne dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylsilanetitanium(ethylene dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium(ethylene dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylsilanetitani um(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylsilanetitanium (ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsi lanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylsilanetitanium(ethylene dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylsilanetitani um(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsi lanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylsilanetitanium(ethylene dioxide),

(.eta.5-indenyl)(2-phenoxy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilanetitanium(et hylene dioxide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanetitanium(e thylene dioxide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilanetitanium(et hylene dioxide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium(ethylene dioxide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsilanetitaniu m(ethylene dioxide),

(.eta.5-indenyl)(2-phenoxy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilanetitanium(et hylene dioxide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanetitanium(e thylene dioxide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilanetitanium(et hylene dioxide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium(ethylene dioxide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsilanetitaniu m(ethylene dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylsilanetitanium(ethy lene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilan etitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylsilanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylsilanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilan etitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylsilanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetit anium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylsilanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylsilanetitanium(ethylene dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylsilanetitanium(ethy lene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilan etitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylsilanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylsilanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilan etitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylsilanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetit anium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylsilanetitanium(ethylene dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylsilanetitanium(ethylene dioxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitaniumbis (hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilaneti taniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanet itaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitaniumbis (hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilaneti taniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetitaniumbis(hex afluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitaniumbis(hexafluoro isopropoxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitaniumbis (hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilaneti taniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanet itaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitaniumbis (hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilaneti taniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetitaniumbis(hex afluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitaniumbis(hexafluoro isopropoxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylsilanetitani umbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsi lanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylsilanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylsilanetitani umbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsi lanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylsilanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-indenyl)(2-phenoxy)dimethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitaniumbis(hexafluo ro isopropoxide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilanetitaniumbis (hexafluoro isopropoxide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanetitaniumbi s(hexafluoro isopropoxide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitaniumbis(hexafluo ro isopropoxide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilanetitaniumbis (hexafluoro isopropoxide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)dimethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitaniumbis(hexafluoro isopropoxide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsilanetitaniu mbis(hexafluoro isopropoxide),

(.eta.5-indenyl)(2-phenoxy)diphenylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitaniumbis(hexafluo ro isopropoxide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilanetitaniumbis (hexafluoro isopropoxide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanetitaniumbi s(hexafluoro isopropoxide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitaniumbis(hexafluo ro isopropoxide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilanetitaniumbis (hexafluoro isopropoxide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)diphenylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitaniumbis(hexafluoro isopropoxide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsilanetitaniu mbis(hexafluoro isopropoxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylsilanetitaniumbis(h exafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilan etitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilan etitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetit aniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylsilanetitaniumbis(hexafluoro isopropoxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylsilanetitaniumbis(h exafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilan etitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilan etitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetit aniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylsilanetitaniumbis(hexafluoro isopropoxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylsilanetitaniumbis(hexafluoro isopropoxide), and compounds obtained by substituting (.eta.5-2-methylcyclopentadienyl, .eta.5-3-methylcyclopentadienyl, .eta.5-2-tert-butylcyclopentadienyl, .eta.5-2-n-butylcyclopentadienyl, .eta.5-3-n-butylcyclopentadienyl, 5-fluorenyl for 7) 5-cyclopentadienyl on the above-described compounds, further, compounds obtained by substituting diethoxide, dipropoxide, diisopropoxide, dibutoxide, 1,2-diphenylethylene dioxide, cyclohexane-1,2-dioxide, dibenzyl oxide and the like for dimethoxide on the above-described compounds; and the like.

The alkoxytitanium complex (I) can be produced by a method in which the alkali metal alkoxides (III) are reacted with the halogenated titanium complex (II) (hereinafter, referred to as Method A).

The alkoxytitanium complex (I) can be produced also by a method in which the alcohols (III') are reacted with the halogenated titanium complex (II) (hereinafter, referred to as Method B), and this production is preferably conducted in the presence of an amine compound.

Examples of the aryloxytitanium complex (IV) in which A represents a carbon atom obtained according to the present invention include (.eta.5-cyclopentadienyl) (2-phenoxy)methanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)met hanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)methanetitan ium diphenoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylmethanet itanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylmethane titanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylmethanet itanium diphenoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylmeth anetitanium diphenoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylmethanet itanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylmethane titanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylmethanet itanium diphenoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylmethanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylmeth anetitanium diphenoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)methanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methan etitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)methanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)methanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methan etitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)methanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetit anium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)methanetitanium diphenoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylmethanetitan ium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylme thanetitanium diphenoxide, (5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl -2-phenoxy)dimethylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylmethanetitanium diphenoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylmethanetitan ium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylmethanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylme thanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylmethanetitanium diphenoxide, (5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenox y)diphenylmethanetitanium diphenoxide,

(.eta.5-3-methyllcyclopentadienyl)(2-phenoxy)methanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanet itanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methane titanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanet itanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)methanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)meth anetitanium diphenoxide,

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethaneti tanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethyl methanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethy lmethanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethaneti tanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethyl methanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitani um diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)dimethylmethanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dime thylmethanetitanium diphenoxide,

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)diphenylmathanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmathaneti tanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenyl mathanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dipheny lmathanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmathaneti tanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenyl mathanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmathanetitani um diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)diphenylmathanetitanium diphenoxide, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diph enylmathanetitanium diphenoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)methanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy) methanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)meth anetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)met hanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitani um diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)meth anetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)methanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) methanetitanium diphenoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmetha netitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmetha netitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethaneti tanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylmethanetitanium diphenoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmetha netitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmetha netitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethaneti tanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylmethanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylmethanetitanium diphenoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)methanetitanium(1,1'-binaphthyl-2,2'-di oxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium(1,1'-bina phthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanetitanium( 1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methanetitanium (1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium(1,1'-bina phthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanetitanium( 1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium(1,1'-binaphth yl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)met hanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)methanetitan ium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylmethanetitanium(1,1'-binaphthyl -2,2'-dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylmethanet itanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylmethane titanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylmethanet itanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitanium(1,1'- binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylmeth anetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylmethanetitanium(1,1'-binaphthyl -2,2'-dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylmethanet itanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylmethane titanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylmethanet itanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitanium(1,1'- binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylmeth anetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)methanetitanium(1,1' -binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methan etitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methan etitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetit anium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)methanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylmethanetitan ium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetraethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenox y)dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy) dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy) dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylmethanetitan ium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylme thanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)methanetitanium(1,1'-binaphthyl -2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanet itanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methane titanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanet itanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium(1,1'-b inaphthyl-2,2-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)meth anetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium(1,1'-bi naphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-rnethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethy lmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethy lmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethyl methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitani um(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dime thylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)diphenylmethanetitanium(1,1'-bi naphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenyl methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dipheny lmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenyl methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitani um(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)diphenylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diph enylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)methanetitanium(1,1'-binaph thyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitani um(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)meth anetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)met hanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitani um(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)meth anetitanium(1,1'-binaphthyl-2,2-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)methanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) methanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium(1,1 '-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmetha netitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmetha netitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylmethanetitanium(1,1 '-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmetha netitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmetha netitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylmethanetitanium(1,1'-binaphthyl-2,2'-dioxide),

and compounds obtained by substituting .eta.5-2-methylcyclopentadienyl, .eta.5-2-tert-butylcyclopentadienyl, .eta.5-2-n-butylcyclopentadienyl, .eta.5-3-n-butylcyclopentadienyl, .eta.5-indenyl, .eta.5-fluorenyl for .eta.5-cyclopentadienyl on the above-described compounds, further, compounds obtained by substituting di-4-methylphenoxide, bis(2,4,6-trimethylphenoxide), bis(pentafluorophenoxide) and the like for diphenoxide on the above-described compounds; and the like.

Examples of the aryloxytitanium complex (IV) in which A represents a silicon atom obtained according to the present invention include (.eta.5-cyclopentadienyl)(2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilaneti tanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanet itanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilaneti tanium diphenoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium diphenoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilaneti tanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanet itanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilaneti tanium diphenoxide, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylsilanetitanium diphenoxide, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium diphenoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylsilanetitani um diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsi lanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylsilanetitanium diphenoxide,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylsilanetitani um diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsi lanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylsilanetitanium diphenoxide,

(.eta.5-indenyl)(2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsila netitanium diphenoxide, (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium diphenoxide , (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-indenyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium diphenoxide, (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsilanetitaniu m diphenoxide,

(.eta.5-indenyl)(2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsila netitanium diphenoxide, (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium diphenoxide , (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-indenyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium diphenoxide, (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsilanetitaniu m diphenoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilan etitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilan etitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetit anium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylsilanetitanium diphenoxide,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilan etitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilan etitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetit anium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylsilanetitanium diphenoxide, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylsilanetitanium diphenoxide,

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylsilanetitanium(1,1'-binaphthyl- 2,2'-dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium(1, 1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanet itanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium(1, 1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium(1,1'-b inaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylsilanetitanium(1,1'-binaphthyl- 2,2'-dioxide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium(1, 1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanet itanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium(1, 1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilaneti tanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium(1,1'-b inaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylsilanetitani um(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsi lanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylsilanetitani um(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsi lanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-indenyl)(2-phenoxy)dimethylsilanetitanium(1,1'-binaphthyl-2,2'-diox ide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium(1,1'-binaph thyl-2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilanetitanium(1, 1'-binaphthyl-2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium(1,1'-binaph thyl-2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilanetitanium(1, 1'-binaphthyl-2,2'-dioxide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium(1,1'-binaphthyl -2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsilanetitaniu m(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-indenyl)(2-phenoxy)diphenylsilanetitanium(1,1'-binaphthyl-2,2'-diox ide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium(1,1'-binaph thyl-2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilanetitanium(1, 1'-binaphthyl-2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanetitanium(1 ,1'-binaphthyl-2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium(1,1'-binaph thyl-2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilanetitanium(1, 1'-binaphthyl-2,2'-dioxide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium(1,1'-binaphthyl -2,2'-dioxide), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsilanetitaniu m(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylsilanetitanium(1,1' -binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilan etitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilan etitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetit anium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylsilanetitanium(1,1' -binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilan etitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilan etitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetit anium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylsilanetitanium(1,1'-binaphthyl-2,2'-dioxide),

and compounds obtained by substituting .eta.5-2-methylcyclopentadienyl, .eta.5-3-methylcyclopentadienyl, .eta.5-2-tert-butylcyclopentadienyl, .eta.5-2-n-butylcyclopentadienyl, .eta.5-3-n-butylcyclopentadienyl, .eta.5-fluorenyl for .eta.5-cyclopentadienyl on the above-described compounds, further, compounds obtained by substituting di-4-methylphenoxide, bis(2,4,6-trimethylphenoxide), bis (pentafluorophenoxide) and the like for diphenoxide on the above-described compounds; and the like.

The aryloxytitanium complex (IV) can be produced also by a method in which the alkali metal aryloxides (V) are reacted with the halogenated titanium complex (II).

Examples of the aminotitanium complex (VI) in which A represents a carbon atom obtained according to the present invention include (.eta.5-cyclopentadienyl)(2-phenoxy)methanetitaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitaniumbis(diethy lamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanetitaniumb is(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methanetitanium bis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitaniumbis(diethy lamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanetitaniumb is(diethylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbis(diethylami de), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)met hanetitaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)methanetitan iumbis(diethylamide),

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis(diethylamide ), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethanetitaniumbi s(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylmethanet itaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylmethane titaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethanetitaniumbi s(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylmethanet itaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitaniumbis(di ethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylmethanetitaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylmeth anetitaniumbis(diethylamide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylmethanetitaniumbis(diethylamide ), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethanetitaniumbi s(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylmethanet itaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylmethane titaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethanetitaniumbi s(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylmethanet itaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitaniumbis(di ethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylmethanetitaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylmeth anetitaniumbis(diethylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(d iethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methan etitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)methanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)methanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methan etitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)methanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetit aniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)methanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)methanetitaniumbis(diethylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylmethanetitan iumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylme thanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylmethanetitaniumbis(diethylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylmethanetitan iumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylme thanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylmethanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylmethanetitaniumbis(diethylamide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(diethylamide ), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitaniumbi s(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanet itaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methane titaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitaniumbi s(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanet itaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbis(di ethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)methanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)meth anetitaniumbis(diethylamide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis(diet hylamide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethaneti taniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethyl methanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethy lmethanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethaneti taniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethyl methanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitani umbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)dimethylmethanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dime thylmethanetitaniumbis(diethylamide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)diphenylmathanetitaniumbis(diet hylamide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmathaneti taniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenyl mathanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dipheny lmathanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmathaneti taniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenyl mathanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmathanetitani umbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)diphenylmathanetitaniumbis(diethylamide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diph enylmathanetitaniumbis(diethylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(diethyla mide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitani umbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)meth anetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)met hanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitani umbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)meth anetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbi s(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)methanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) methanetitaniumbis(diethylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis( diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmetha netitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylmethanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylmethanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmetha netitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylmethanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethaneti taniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylmethanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylmethanetitaniumbis(diethylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylmethanetitaniumbis( diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmetha netitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylmethanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylmethanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmetha netitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylmethanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethaneti taniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylmethanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylmethanetitaniumbis(diethylamide),

(.eta.5-cyclopentadienyl)(2-phenoxy)methanetitaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitaniumbis(diphen ylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanetitaniumb is(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methanetitanium bis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitaniumbis(diphen ylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanetitaniumb is(diphenylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbis(diphenylam ide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)met hanetitaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)methanetitan iumbis(diphenylamide),

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis(diphenylamid e), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethanetitaniumbi s(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylmethanet itaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylmethane titaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethanetitaniumbi s(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylmethanet itaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitaniumbis(di phenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylmethanetitaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylmeth anetitaniumbis(diphenylamide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylmethanetitaniumbis(diphenylamid e), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethanetitaniumbi s(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylmethanet itaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylmethane titaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethanetitaniumbi s(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylmethanet itaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitaniumbis(di phenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylmethanetitaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylmeth anetitaniumbis(diphenylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(d iphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methan etitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)methanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)methanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methan etitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)methanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetit aniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)methanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)methanetitaniumbis(diphenylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylmethanetitan iumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylme thanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylmethanetitaniumbis(diphenylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylmethanetitan iumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylme thanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylmethanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylmethanetitaniumbis(diphenylamide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(diphenylamid e), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitaniumbi s(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanet itaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methane titaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitaniumbi s(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanet itaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbis(di phenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)methanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)meth anetitaniumbis(diphenylamide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis(diph enylamide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethaneti taniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethyl methanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethy lmethanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethaneti taniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethyl methanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitani umbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)dimethylmethanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dime thylmethanetitaniumbis(diphenylamide),

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)diphenylmethanetitaniumbis(diph enylamide), (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethaneti taniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-3-phenoxy)diphen ylmethanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dipheny lmethanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethaneti taniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenyl methanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitani umbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)diphenylmethanetitaniumbis(diphenylamide), (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diph enylmethanetitaniumbis(diphenylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)methanetitaniumbis(diphenyl amide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitani umbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)meth anetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-5-phenoxy)m ethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitani umbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)meth anetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitaniumbi s(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)methanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) methanetitaniumbis(diphenylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylmethanetitaniumbis( diphenylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethan etitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylmethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylmethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmetha netitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylmethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethaneti taniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylmethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylmethanetitaniumbis(diphenylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylmethanetitaniumbis( diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmetha netitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylmethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylmethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmetha netitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylmethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethaneti taniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylmethanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylmethanetitaniumbis(diphenylamide), and compounds obtained by substituting .eta.5-2-5 methylcyclopentadienyl, .eta.5-2-tert-butylcyclopentadienyl, .eta.5-2-n-butylcyclopentadienyl, .eta.5-3-n-butylcyclopentadienyl, .eta.5-indenyl, .eta.5-fluorenyl for .eta.5-cyclopentadienyl on the above-described compounds, further, compounds obtained by substituting dimethylamide, dipropylamide, diisopropylamide, dibutylamide, bis(trimethylsilylamide), piperidide, dicyclohexylamide, dibenzylamide and the like for diethylamide; and the like.

Examples of the aminotitanium complex (VI) in which A represents a silicon atom obtained according to the present invention include (.eta.5-cyclopentadienyl)(2-phenoxy)dimethylsilanetitaniumbis(diethylamide ), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitaniumbis (diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilaneti taniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanet itaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitaniumbis (diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilaneti taniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetitaniumbis(die thylamide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylsilanetitaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitaniumbis(diethylamide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylsilanetitaniumbis(diethylamide) , (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitaniumbi s(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilaneti taniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanet itaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitaniumbis (diethylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilaneti taniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetitaniumbis(die thylamide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylsilanetitaniumbis(diethylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitaniumbis(diethylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylsilanetitani umbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsi lanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylsilanetitaniumbis(diethylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylsilanetitani umbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsi lanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylsilanetitaniumbis(diethylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylsilanetitaniumbis(diethylamide),

(.eta.5-indenyl)(2-phenoxy)dimethylsilanetitaniumbis(diethylamide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitaniumbis(diethyla mide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilanetitaniumbis (diethylamide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanetitaniumbi s(diethylamide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitaniumbis(diethyla mide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilanetitaniumbis (diethylamide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)dimethylsilanetitaniumbis(diethylamide ), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitaniumbis(diethylamide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsilanetitaniu mbis(diethylamide),

(.eta.5-indenyl)(2-phenoxy)diphenylsilanetitaniumbis(diethylamide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitaniumbis(diethyla mide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilanetitaniumbis (diethylamide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanetitaniumbi s(diethylamide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitaniumbis(diethyla mide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilanetitaniumbis (diethylamide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)diphenylsilanetitaniumbis(diethylamide ), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitaniumbis(diethylamide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsilanetitaniu mbis(diethylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylsilanetitaniumbis(d iethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilan etitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylsilanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylsilanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilan etitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylsilanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetit aniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylsilanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylsilanetitaniumbis(diethylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylsilanetitaniumbis(d iethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilan etitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylsilanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylsilanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilan etitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylsilanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetit aniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylsilanetitaniumbis(diethylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylsilanetitaniumbis(diethylamide),

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylsilanetitaniumbis(diphenylamide ), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitaniumbis (diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilaneti taniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanet itaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitaniumbis (diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilaneti taniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetitaniumbis(dip henylamide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylsilanetitaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxyYdimethylsila netitaniumbis(diphenylamide),

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylsilanetitaniumbis(diphenylamide ), (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitaniumbis (diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilaneti taniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanet itaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitaniumbis (diphenylamide), (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilaneti taniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetitaniumbis(dip henylamide), (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylsilanetitaniumbis(diphenylamide), (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitaniumbis(diphenylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylsilanetitani umbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsi lanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylsilanetitaniumbis(diphenylamide),

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylsilanetitani umbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsi lanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylsilanetitaniumbis(diphenylamide), (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylsilanetitaniumbis(diphenylamide),

(.eta.5-indenyl)(2-phenoxy)dimethylsilanetitaniumbis(diphenylamide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitaniumbis(diphenyl amide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilanetitaniumbis (diphenylamide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanetitaniumbi s(diphenylamide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitaniumbis(diphenyl amide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilanetitaniumbis (diphenylamide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)dimethylsilanetitaniumbis(diphenylamid e), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitaniumbis(diphenylamide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsilanetitaniu mbis(diphenylamide),

(.eta.5-indenyl)(2-phenoxy)diphenylsilanetitaniumbis(diphenylamide), (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitaniumbis(diphenyl amide), (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilanetitaniumbis (diphenylamide), (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanetitaniumbi s(diphenylamide), (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitaniumbis(diphenyl amide), (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilanetitaniumbis (diphenylamide), (.eta.5-indenyl)(3-phenyl-2-phenoxy)diphenylsilanetitaniumbis(diphenylamid e), (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitaniumbis(diphenylamide), (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsilanetitaniu mbis(diphenylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylsilanetitaniumbis(d iphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilan etitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylsilanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl), (3-tert-butyl-5-methoxy-2-phenoxy)d imethylsilanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilan etitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylsilanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetit aniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylsilanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylsilanetitaniumbis(diphenylamide),

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylsilanetitaniumbis(d iphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilan etitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylsilanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylsilanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilan etitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylsilanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetit aniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylsilanetitaniumbis(diphenylamide), (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylsilanetitaniumbis(diphenylamide), and compounds obtained by substituting .eta.5-2-methylcyclopentadienyl, .eta.5-3-methylcyclopentadienyl, .eta.5-2-tert-butylcyclopentadienyl, .eta.5-2-n-butylcyclopentadienyl, .eta.5-3-n-butylcyclopentadienyl, .eta.5-fluorenyl for .eta.5-cyclopentadienyl on the above-described compounds, compounds obtained by optional substitution by dimethoxysilane or diethoxysilane for dimethylsilane on the above-described compounds, and further, compounds obtained by substituting dimethylamide, dipropylamide, diisopropylamide, dibutylamide, bis(trimethylsilylamide), piperidide, dicyclohexylamide, dibenzylamide and the like for diethylamide on the above-described compounds; and the like.

The aminotitanium complex (VI) can be produced by a method in which the alkali metal amides (VII) are reacted with the halogenated titanium complex (II)

Examples of halogen in the substituents X.sup.1 and X.sup.2 in the halogenated titanium complex (II) include fluorine, chlorine, bromine, iodine and the like.

Examples of the halogenated titanium complex (II) in which A represents a carbon atom include (.eta.5-cyclopentadienyl)(2-phenoxy)methanetitanium dichloride, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)met hanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)methanetitan ium dichloride,

(.eta.5-cyclopentadienyl)(2-phenoxy)dimethylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylmethanet itanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylmethane titanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylmethanet itanium dichloride, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylmeth anetitanium dichloride,

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylmethanet itanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylmethane titanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylmethanet itanium dichloride, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylmethanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylmeth anetitanium dichloride,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)methanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methan etitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)methanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)methanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methan etitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)methanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetit anium dichloride,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-me thyl-2-phenoxy)methanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)methanetitanium dichloride,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylmethanetitan ium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylme thanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylmethanetitanium dichloride,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylmethanetitan ium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylme thanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylmethanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylmethanetitanium dichloride,

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)methanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)methanet itanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)methane titanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)methanet itanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)methanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)meth anetitanium dichloride,

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmethaneti tanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethyl methanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethy lmethanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmethaneti tanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethyl methanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethanetitani um dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)dimethylmethanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dime thylmethanetitanium dichloride,

(.eta.5-3-methylcyclopentadienyl)(2-phenoxy)diphenylmathanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmathaneti tanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenyl mathanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dipheny lmathanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmathaneti tanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenyl mathanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmathanetitani um dichloride, (.eta.5-3-methylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phe noxy)diphenylmathanetitanium dichloride, (.eta.5-3-methylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diph enylmathanetitanium dichloride,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)methanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)methanetitani um dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)meth anetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)met hanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)methanetitani um dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)meth anetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)methanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)methanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) methanetitanium dichloride,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylmetha netitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylmetha netitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylmethaneti tanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylmethanetitanium dichloride,

(.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylmetha netitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylmetha netitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylmethaneti tanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylmethanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylmethanetitanium dichloride, and compounds obtained by substituting .eta.5-2-methylcyclopentadienyl, .eta.5-2-tert-butylcyclopentadienyl, .eta.5-2-n-butylcyclopentadienyl, .eta.5-3-n-butylcyclopentadienyl, .eta.5-indenyl, .eta.5-fluorenyl for .eta.5-cyclopentadienyl, and substituting dibromide, diiodide for dichloride on the above-described compounds.

Examples of the halogenated titanium complex (II) in which A represents a silicon atom include (.eta.5-cyclopentadienyl)(2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilaneti tanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanet itanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilaneti tanium dichloride, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dim ethylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium dichloride,

(.eta.5-cyclopentadienyl)(2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilaneti tanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanet itanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilaneti tanium dichloride, (.eta.5-cyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dip henylsilanetitanium dichloride, (.eta.5-cyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium dichloride,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)dimethylsilanetitani um dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimeth ylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)dimethylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)dimethylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimeth ylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)dimethylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsi lanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)dimethylsilanetitanium dichloride,

(.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(2-phenoxy)diphenylsilanetitani um dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphen ylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-pheno xy)diphenylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phen oxy)diphenylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphen ylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyl-5-chloro-2-pheno xy)diphenylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsi lanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-m ethyl-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-2,3,4,5-tetramethylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-p henoxy)diphenylsilanetitanium dichloride, (.eta.7 5-indenyl)(2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-indenyl)(3-phenyl-2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)dimethylsila netitanium dichloride, (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)dimethylsilanetitaniu m dichloride, (.eta.5-indenyl)(2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-indenyl)(3,4-dimethyl-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyl-5-methyl-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyl-5-methoxy-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyl-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyl-5-chloro-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-indenyl)(3-phenyl-2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-indenyl)(3-tert-butyldimethylsilyl-5-methyl-2-phenoxy)diphenylsila netitanium dichloride, (.eta.5-indenyl)(3-trimethylsilyl-5-methyl-2-phenoxy)diphenylsilanetitaniu m dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)dimethylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)dimethylsilan etitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dime thylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dim ethylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)dimethylsilan etitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)dime thylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)dimethylsilanetit anium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)dimethylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) dimethylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(2-phenoxy)diphenylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3,4-dimethyl-2-phenoxy)diphenylsilan etitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)diph enylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-methoxy-2-phenoxy)dip henylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-2-phenoxy)diphenylsilan etitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyl-5-chloro-2-phenoxy)diph enylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-phenyl-2-phenoxy)diphenylsilanetit anium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-tert-butyldimethylsilyl-5-methyl-2 -phenoxy)diphenylsilanetitanium dichloride, (.eta.5-3-tert-butylcyclopentadienyl)(3-trimethylsilyl-5-methyl-2-phenoxy) diphenylsilanetitanium dichloride, and compounds obtained by substituting .eta.5-2-methylcyclopentadienyl, .eta.5-3-methylcyclopentadienyl, .eta.5-2-tert-butylcyclopentadienyl, .eta.5-2-n-butylcyclopentadienyl, .eta.5-3-n-butylcyclopentadienyl, .eta.5-fluorenyl for .eta.5-cyclopentadienyl, and substituting bromide, iodide for chloride on the above-described compounds.

Examples of the alkali metal alkoxides of the formula (III) include sodium methoxide, sodium ethoxide, sodium n-propoxide, sodium isopropoxide, sodium n-butoxide, sodium sec-butoxide, sodium tert-butoxide, sodium n-pentoxide, sodium neopentoxide, sodium methoxyethoxide, sodium ethoxyethoxide, sodiumbenzyloxide, sodiuml-phenylethoxide, and alkali metal alkoxides derived from monools in which sodium is substituted by lithium, potassium; disodiumethyilene dioxide, disodiummethylethylene dioxide, disodium 1,2-dimethylethylene dioxide, disodiumtetramethylethylene dioxide, disodiumphenyethylene dioxide, disodiuml,2-diphenylethylene dioxide, disodiumtetraphenylethylene dioxide, disodiumcyclopentane-1,2-dioxide, disodiumcyclohexane-1,2-dioxide, disodiumpropylene-1,3-dioxide, disodium 1,3-dimethylpropylene-1,3-dioxide, disodiuml,3-diphenylpropylene-1,3-dioxide, and alkali metal alkoxides derived from diols in which sodium is optionally substituted by lithium, potassium, and all steric and optical isomers thereof.

These are not only commercially available but also can be produced by reacting an alcohol compound with the alkali metal compounds.

Examples of the alcohols of the formula (III') include monools such as methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, n-pentanol, neopentyl alcohol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, benzyl alcohol, 1-phenylethanol and the like,

diols such as ethylene glycol, propylene glycol, 2,3-butanediol, tetramethylethylene glycol, phenylethylene glycol, hydrobenzoin, tetraphenylethylene glycol, cyclopentane-1,2-diol, cyclohexane-1,2-diol, 1,3-propanediol, 2,4-pentanediol, 1,3-diphenyl-1,3-propanediol, tartaric acid and the like, and all steric and optical isomers thereof.

The amine compound is used as a dehydrohalogenating agent and is not particularly restricted, and examples thereof include primary amines such as aniline, chloroaniline, bromoaniline, fluoroaniline, toluidine, anisidine, naphthylamine, benzylamine, propylamine, butylamine, pentylamine and the like, secondary amines such as N-methylaniline, N-ethylaniline, diphenylamine, N-methylchloroaniline, N-methylbromoaniline, N-methylfluoroaniline, pyrrolidine, morpholine, piperidine and the like, tertiary amines such as trimethylamine, triethylamine, diiosopropylethylamine, N,N-dimethylaniline, N,N-dimethylchloroaniline, N,N-dimethylbromoaniline, N,N-dimethylfluoroaniline, N-methylpyrrolidine, N-methylmorpholine, N-methylpiperidine, 1,4-diazabicyclo[2,2,2]octane, 1,5-diazabicyclo[4.3.0]non-5-ene, 1,8-diazabicyclo[5,4,0]undec-7-ene and the like, and piridines such as piridine, N,N-dimethylaminopiridine, picoline, pipecoline, and the like,

Examples of the alkali metal aryloxides (V) include lithium phenoxide, lithium 2-methylphenoxide, lithium 3-methylphenoxide, lithium 4-methylphenoxide, lithium 2,3-dimethylphenoxide, lithium 2,4-dimethylphenoxide, lithium 2,5-dimethylphenoxide, lithium 2,6-dimethylphenoxide, lithium 3,4-dimethylphenoxide, lithium 2,3,4-trimethylphenoxide, lithium 2,3,5-trimethylphenoxide, lithium 2,3,6-trimethylphenoxide, lithium 3,4,5-trimethylphenoxide, lithium 2,4,6-trimethylphenoxide, lithium 2,3,4,5-tetramethylphenoxide, lithium 2,3,4,6-tetramethylphenoxide, 2,3,5,6-tetramethylphenoxide, lithium pentamethyiphenoxide, lithium ethylphenoxide, lithium n-propylphenoxide, lithium isopropylphenoxide, lithium n-but ylphenoxide, lithium sec-butylphenoxide, litihum tert-butylphenoxide, lithium n-pentylphenoxide, lithium neopentylphenoxide, lithium n-hexylphenoxide, lithium n-otylphenoxide, lithiumn-decylphenoxide, lithium n-dodecylphenoxide, lithium n-tetradecylphenoxide, lithium naphthyloxide, lithium anthracenyloxide; and compounds obtained by substituting sodium, potassium for lithium on these compounds; further, alkali metal haloaryloxides obtained by substitution with halogen such as fluorine, chlorine, bromine and the like on these compounds; and alkali metal alkoxyaryloxides obtained by optional substitution by a methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, sec-butoxy group, tert-butoxy group and the like for a halogen atom on the above-described haloalkyl groups; alkali metal cyanoaryloxides obatined by substitution by a cyano group for the halogen atom of the haloaryloxides above; and alkali metal nitroaryloxides obatined by substitution by a nitro group for the halogen atom of the haloaryloxides above; and preferable examples thereof include lithium phenoxide, litium 4-methylphenoxide, lithium 2,4,6-terimethylphenoxide, sodium phenoxide, sodium 4-methylphenoxide and sodium 2,4,6-trimethylphenoxide.

Examples of the compound in which substituents Ars bond mutually to form a ring include dilithium 1,1'-biphenyl-2,2'-dioxide, dilithium 1,1'-biphenyl-4,4'-dimethyl-2,2'-dioxide, dilithium 1,1'-biphenyl-6,6'-dimethyl-2,2'-dioxide, dilithium 1,1'-biphenyl-3,3'-di-tert-butyl-2,2'-dioxide, dilithium 1,1'-bibinaphthyl-2,2'-dioxide, dilithium 1,1'-bibinaphthyl-3,3-bis(trimethylsilyl)-2,2'-dioxide, dilithium 1,1'-thiobiphenyl-2,2'-dioxide, dilithium 1,1'-thiobiphenyl-5,5'-dimethyl-2,2'-dioxide, dilithium 1,1'-thiobiphenyl-3,3'-di-tert-butyl-5,5'-dimethyl-2,2'-dioxide, dilithium 1,1'-methylenebiphenyl-2,2'-dioxide, dilithium 1,1'-methylenebiphenyl-5,5'-dimethyl-2,2'-dioxide, dilithium 1,1'-methylenebiphenyl-3,3'-di-tert-butyl-5,5'-dimethyl-2,2'-dioxide, dilithium 1,1'-phenylphosphinobiphenyl-2,2'-dioxide, dilithium 1,1'-phenylphosphinobiphenyl-5,5'-dimethyl-2,2'-dioxide, dilithium 1,1'-phenylphosphinobiphenyl-3,3'-di-tert-butyl-5,5'-dimethyl-2,2'-dioxide , and alkali metal biaryloxides derived from biarylhydroxides in which lithium is substituted by potassium, sodium.

These are not only commercially available but also can be produced by reacting the arylhydroxide compound with the alkali metal compounds.

Examples of the alkali metal amides (VII) include lithium dimethylamide, lithium diethylamide, lithium di-n-propylamide, lithium diisopropylamide, lithium di-n-butylamide, lithium di-n-pentylamide, lithium dineopentylamide, lithium di-n-octylamide, lithium dicyclohexylamide, lithium dicyclopentylamide, lithium dibenzylamide, lithium ditolylmethylamide, lithium N-methylanilide, lithium N-ethylanilide, lithium diphenylamide, lithium ditolylamide, lithium pyrrolidide, lithium 2,5-dimethylpyrrolide, lithium 2,2,5,5-tetramethylpyrrolide, lithium piperidide, lithium 2,6-dimethylpiperidide, lithium 2,2,6,6-tetramethylpiperidide, lithium azetidide, and compounds obtained by substituting sodium, potassium for lithium on the above-described compounds.

These are not only commercially available but also can be produced by reacting an amine compound with the alkali metal compounds.

Production of an alkoxytitanium complex is not particularly restricted, and Method A can be preferably conducted by reacting the halogenated titanium complex (II) with the alkali metal alkoxides (III) and Method B can be preferably conducted by reacting the halogenated titanium complex (II) with the alcohols (III'), optionally in the presene of an amine, respectively under inert atmosphere such as nitrogen, argon and the like in the presence of a solvent.

Charge ratio of the alkali metal alkoxides (III) to the halogenated titanium complex (II) in Method A is usually from 0.5 to 10-fold by mol, preferably from 0.8 to 3-fold by mol.

Charge ratio of the alcohols (III') to the halogenated titanium complex (II) in Method B is usually from 0.5 to 10-fold by mol, preferably from 0.8 to 3-fold by mol, and charge ratio of an amine to the halogenated titanium complex (II) in Method B is usually from 0.5 to 5-fold by mol, preferably from 0.8 to 3-fold by mol.

The solvent is not particularly restricted, examples thereof include aliphatic hydrocarbons such as pentane, hexane, heptane, octane, decane and the like, aromatic hydrocarbons such as benzene, toluene, xylene, mesitylene and the like, aliphatic halogenated hydrocarbons such as dichloromethane, chloroform, dichloroethane and the like, aromatic halogenated hydrocarbons such as monochlorobenzene, dichlorobenzene and the like, ethers such as diethyl ether, dibutyl ether, methyl t-butyl ether, tetrahydrofuran and the like, and alcohol corresponding to the alkali metal alkoxides (III), and mixtures thereof.

The amount used thereof is usually from 1 to 200-fold by weight, preferably from 3 to 30-fold by weight based on the halogenated titanum complex (II) in both Method A and Method B.

Reaction method for producing an aryloxytitanium complex is not particularly restricted, and it can be preferably conducted by reacting the halogenated titanium complex (II) with the alkali metal aryloxides (V) under inert atmosphere such as nitrogen, argon and the like in the presence of a solvent.

Charge ratio of the alkali metal aryloxides (V) to the halogenated titanium complex (II) is usually from 0.5 to 10-fold by mol, preferably from 0.8 to 3-fold by mol.

The solvent is not particularly restricted, examples thereof include aliphatic hydrocarbons such as pentane, hexane, heptane, octane, decane and the like, aromatic hydrocarbons such as benzene, toluene, xylene, mesitylene and the like, aliphatic halogenated hydrocarbons such as dichloromethane, chloroform, dichloroethane and the like, aromatic halogenated hydrocarbons such as monochlorobenzene, dichlorobenzene and the like, ethers such as diethyl ether, dibutyl ether, methyl t-butyl ether, tetrahydrofuran and the like, and mixtures thereof.

The amount used thereof is usually from 1 to 200-fold by weight, preferably from 3 to 30-fold by weight based on the halogenated titanium complex (II).

Reaction method for producing an aminotitanium complex is not particularly restricted, and it can be preferably conducted by reacting the halogenated titanium complex (II) with the alkali metal amides (VII) under inert atmosphere such as nitrogen, argon and the like in the presence of a solvent.

Use ratio by mol of the alkali metal amides (VII) to the halogenated titanium complex (II) is usually from 0.5 to 10-fold by mol, preferably from 0.8 to 3-fold by mol.

The solvent is not particularly restricted, examples thereof include aliphatic hydrocarbons such as pentane, hexane, heptane, octane, decane and the like, aromatic hydrocarbons such as benzene, toluene, xylene, mesitylene and the like, aliphatic halogenated hydrocarbons such as dichloromethane, chloroform, dichloroethane and the like, aromatic halogenated hydrocarbons such as monochlorobenzene, dichlorobenzene and the like, ethers such as diethyl ether, dibutyl ether, methyl t-butyl ether, tetrahydrofuran and the like.

The amount used thereof is usually from 1 to 200-fold by weight, preferably from 3 to 30-fold by weight based on the halogenated titanum complex (II).

The reaction temperature is usually from -100.degree. C. to the boiling point of a solvent, and preferably from -80.degree. C. to 30.degree. C.

After the reaction, the alkoxytitanium complex (I), aryloxytitanium complex (IV) or aminotitanium complex (VI) can be obtained by, for example, removing insoluble solids and distilling off a solvent. If necessary, the product can be purified by a conventional method such as re-crystallization, sublimation and the like. Effect of the Invention

According to the present invention, an alkoxytitanium complex (I), an aryloxytitanium complex (IV) or an aminotitanium complex (VI) can be produced industrially advantageously.

The following examples further illustrate the present invention in detail, but do not limit the present invention.

In schloenk tube, 0.131 g (4.1 mmol) of methanol was dissolved in 10 ml of anhydrous ether, and to this solution was added 1.05 M methyllithium ether solution (3.9 ml, 4.1 mmol) dropwise at -78.degree. C. The mixture was heated to 20.degree. C., production of lithium methoxide was confirmed by checking completion of gas evolution, and the mixture was cooled again to -78.degree. C. A suspension of 0.919 g (2.0 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride in 20 ml of anhydrous ether previously prepared in another schloenk tube was transferred into the above-described reaction solution, then, the mixture was allowed to warm to room temperature gradually. The reaction solution was concentrated, then, to this was added 20 ml of toluene, and insoluble components were filtrated. The filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dimethoxide as a yellow crystal (0.86 g, 95%).

.sup.1 H NMR (270 MHz, C.sub.6 D.sub.6) .delta. 7.26 (m, 2H), 4.13 (s, 6H), 2.33 (s, 3H), 1.97 (s, 6H), 1.89 (s, 6H), 1.59 (s, 9H), 0.55 (s, 6H)

In schloenk tube, 4.59 g (10.0 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride was suspended in 42 ml of toluene, to this was added 28% sodium methylate methanol solution (4.05 g, 21.0 mmol) dropwise at -78.degree. C., then, the mixture was allowed to warm to room temperature gradually. The reaction solution was concentrated, then, to this was added 50 ml of toluene, and insoluble components were filtrated. The filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dimethoxide as a yellow crystal (4.33 g, 96%).

In schloenk tube, 0.40 g (12.5 mmol) of methanol and 2.53 g (25.0 mmol) of triethylamine were dissolved in 30 ml of toluene, to this was added 2.30 g (5.0 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride portionwise at -78.degree. C. with stirring, then, the mixture was allowed to warm to room temperature and stirred for 10 hours. Insoluble components were filtrated, and the residue was washed with 20 ml of toluene. The filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dimethoxide as a yellow crystal (1.74 g, 80%).

In schloenk tube, 0.246 g (4.1 mmol) of isopropanol was dissolved in 10 ml of anhydrous ether, and to this solution was added 1.05 M methyllithium ether solution (3.9 ml, 4.1 mmol) dropwise at -78.degree. C. The mixture was heated to 20.degree. C., production of lithium isopropoxide was confirmed by checking completion of gas evolution, and the mixture was cooled again to -78.degree. C. A suspension of 0.919 g (2.0 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride in 20 ml of anhydrous ether previously prepared in another schloenk tube was transferred into the above-described reaction solution, then, the mixture was allowed to warm to room temperature gradually. The reaction solution was concentrated, then, to this was added 20 ml of toluene, and insoluble components were filtrated. The filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium diisopropoxide as a yellow crystal (0.98 g, 96%).

.sup.1 H NMR (270 MHz, C.sub.6 D.sub.6) .delta. 7.29 (m, 2H), 4.75 (m, 2H), 2.31 (s, 3H), 2.02 (s, 6H), 1.93 (s, 6H), 1.58 (s, 9H), 1.18 (m, 12H), 0.60 (s, 6H)

In schloenk tube, 0.55 g (1.2 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride was suspended in 3 ml of toluene, to this was added 0.24 g (2.5 mmol) of t-butoxysodium at 0.degree. C. The mixture was heated to 20.degree. C., stirred for 1 hour, then, refluxed for 8 hours. After completion of the reaction, the mixture was cooled to room temperature, and insoluble components were removed by filtration. The filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium di-t-butoxide as a yellow crystal (0.49 g, 77%).

.sup.1 H NMR (270 MHz, C.sub.6 D.sub.6) .delta. 7.28 (d, 1H), 7.16 (d, 1H), 2.32 (s, 3H), 2.05 (s, 6H), 1.97 (s, 6H), 1.59 (s, 9H), 1.35 (s, 18H), 0.64 (s, 6H)

In schloenk tube, ethylene glycol (4.26 g, 68.6 mmol) was dissolved in 10 ml of anhydrous ether, and to this solution was added 1.05 M methyllithium ether solution (3.9 ml, 4.1 mmol) dropwise at -78.degree. C. The mixture was heated to 20.degree. C., production of dilithiumethylene dioxide was confirmed by checking completion of gas evolution, and the mixture was cooled again to -78.degree. C. A suspension of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride (30.0 g, 65.3 mmol) in 100 ml of anhydrous ether previously prepared in another schloenk tube was transferred into the above-described reaction solution, then, the mixture was allowed to warm to room temperature gradually. The reaction solution was concentrated, then, to this was added 200 ml of toluene, the resulting mixture was stirred for 2 hours at 100.degree. C., then insoluble components were filtrated. The filtrate was concentrated, and recrystallized from toluene to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium (ethylene dioxide) as a yellow crystal (8.51 g, 28%).

.sup.1 H NMR (270 MHz, C6D.sub.6) .delta. 7.31 (1H), 7.28 (1H), 4.54 (2H), 4.16 (2H), 2.35 (s, 3H), 2.25 (s, 3H), 2.08 (s, 3H), 1.85 (s, 3H), 1.75 (s, 3H), 1.63 (s, 9H), 0.78 (s, 3H), 0.55 (s, 3H)

In schloenk tube, ethylene glycol monomethyl ether (1.56 g, 20.5 mmol) was dissolved in 50 ml of anhydrous ether, and to this solution was added 1.05 M methyllithium ether solution (19.5 ml, 20.5 mmol) dropwise at -78.degree. C. The mixture was heated to 20.degree. C., production of lithium methoxyethoxide was confirmed by checking completion of gas evolution, and the mixture was cooled again to -78.degree. C. A suspension of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride (4.59 g, 10.0 mmol) in 30 ml of anhydrous ether previously prepared in another schloenk tube was transferred into the above-described reaction solution, then, the mixture was allowed to warm to room temperature gradually. The reaction solution was concentrated, then, to this was added 20 ml of toluene, and insoluble components were filtrated. The filtrate was concentrated, and recrystallized from hexane to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium methoxyethoxide as a yellow crystal (2.18 g, 40%).

.sup.1 H NMR (270 MHz, C.sub.6 D.sub.6) .delta. 7.28 (2H), 4.48 (4H) ,3.36 (4H), 3.18 (s, 6H), 2.32 (s, 3H), 2.05 (s, 12H), 1.55 (s, 9H), 0.60 (s, 6H)

In schloenk tube, 0.64 g (3.0 mmol) of (+) -hydrobenzoin and 1.01 g (10.0 mmol) of triethylamine were dissolved in 30 ml of toluene, to this was added 1.38 g (3.0 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride portionwise at -78.degree. C. with stirring, then, the mixture was allowed to warm to room temperature and stirred for 10 hours. Insoluble components were filtrated, and the residue was washed with 20 ml of toluene. The filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium ((+) -1,2-diphenylethylene-1,2-dioxide) as a yellow crystal (1.60 g, 89%).

.sup.1 H NMR (270 MHz, C.sub.6 D.sub.6) .delta. 7.45-7.03 (10H), 6.93 (1H), 6.45 (1H), 2.45 (s, 3H), 2.33 (s, 3H), 2.30 (s, 2H), 2.16 (2, 3H), 2.06 (s, 3H), 1.95 (s, 3H), 1.75 (s, 9H), 0.58 (s, 3H), 0.55 (s, 3H)

(.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimeth ylsilanetitanium diphenoxide

In schloenk tube, 1.976 g (21 mmol) of phenol was dissolved in 30 ml of toluene, and to this solution was added 1.60 M n-butyllithium hexane solution (13.1 ml, 21 mmol) dropwise at -78.degree. C. The mixture was heated to 20.degree. C., production of lithium phenoxide was confirmed by checking completion of gas evolution, and the mixture was cooled again to -78.degree. C. A suspension of 4.59 g (10.0 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride in 20 ml of toluene previously prepared in another schloenk tube was transferred into the above-described reaction solution, then, the mixture was allowed to warm to room temperature gradually. Insoluble components were filtrated, then, the filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium diphenoxide as a yellow crystal (4.91 g, 85%).

.sup.1 H NMR (270 MHz, C.sub.6 D.sub.6) .delta. 6.68-7.42 (m, 12H), 2.48 (s, 3H), 2.15 (s, 6H), 2.03 (s, 6H), 1.56 (s, 9H), 0.55 (s, 6H)

In schloenk tube, 0.859 g (3.0 mmol) of (+)-BINOL was dissolved in 20 ml of THF, and to this solution was added 1.60 M n-butyllithium hexane solution (4.38 ml, 7.0 mmol) dropwise at -78.degree. C. The mixture was heated to 20.degree. C., production of dilithium (+)-1,1'-binaphthyl-2,2'-oxide was confirmed by checking completion of gas evolution, and the mixture was cooled again to -78.degree. C. A suspension of 1.38 g (3.0 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride in 10 ml of toluene previously prepared in another schloenk tube was transferred into the above-described reaction solution, then, the mixture was allowed to warm to room temperature gradually. Insoluble components were filtrated, then, the filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium ((+)-1,1'-binaphthyl-2,2'-oxide) as a yellow crystal (1.49 g, 74%).

.sup.1 H NMR (270 MHz, C.sub.6 D.sub.6) .delta. 6.85-7.85 (m, 14H), 2.28 (s, 3H), 2.24 (s, 3H), 2.08 (s, 3H), 1.96 (s, 3H), 1.52 (s, 3H), 0.90 (s, 9H), 0.75 (s, 3H), 0.62 (s, 3H)

In schloenk tube, 0.300 g (4.1 mmol) of diethylamine was dissolved in 10 ml of ether, and to this solution was added 1.05 M methyllithium ether solution (3.9 ml, 4.1 mmol) dropwise at -78.degree. C. The mixture was heated to 20.degree. C., production of lithiumdiethylamide was confirmed by checking completion of gas evolution, and the mixture was cooled again to -78.degree. C. A suspension of 0.919 g (2.0 mmol) of (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium dichloride in 20 ml of ether previously prepared in another schloenk tube was transferred into the above-described reaction solution, then, the mixture was allowed to warm to room temperature gradually. The reaction solution was concentrated, then, to this was added 20 ml of toluene, and insoluble components were filtrated. The filtrate was concentrated to obtain (.eta.5-tetramethylcyclopentadienyl)(3-tert-butyl-5-methyl-2-phenoxy)dimet hylsilanetitanium bis(diethylamide) as a black violet oil (1.03 g, 97%).

.sup.1 H NMR (270 MHz, C.sub.6 D.sub.6) .delta. 7.35 (m, 2H), 3.77 (m, 2H), 3.56 (m, 2H), 2.33 (s, 3H), 2.03 (s, 6H), 2.00 (s, 6H), 1.69 (s, 9H), 0.95 (m, 12H), 0.55 (s, 6H), 9H), 0.58 (s, 3H), 0.55 (s, 3H).