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A catalyst system includes a metallocene compound having the formula R9 L1 L2 M1 R1 R2 wherein R9 is a bridge between ligands L1 and L2 and M1 is a metal of Group IVB of the Periodic Table such as titanium, zirconium and hafnium and R1 and R2 can be hydrogen or aliphatic or aromatic groups. Bridge R

A catalyst system includes a metallocene compound having the formula R9 L1 L2 M1 R1 R2 wherein R9 is a bridge between ligands L1 and L2 and M1 is a metal of Group IVB of the Periodic Table such as titanium, zirconium and hafnium and R1 and R2 can be hydrogen or aliphatic or aromatic groups. Bridge R9 can include silicon, germanium or tin. The metallocene compound of the invention as synthesized has a racemic to meso isomer ratio of greater than 5 to 1, thereby precluding the need for subsequent separation of the meso isomer.

대표청구항 ▼

What is claimed is: 1. A composition comprising a mixture of racemic and meso isomers of metallocene compounds having the formula: description="In-line Formulae" end="lead"R9L1L2 M1R1R2 (formula 1a)description="In-line Formulae" end="tail" where L1 and L2 are identical or different ligands and

What is claimed is: 1. A composition comprising a mixture of racemic and meso isomers of metallocene compounds having the formula: description="In-line Formulae" end="lead"R9L1L2 M1R1R2 (formula 1a)description="In-line Formulae" end="tail" where L1 and L2 are identical or different ligands and are each a substituted mononuclear or polynuclear hydrocarbon radical selected from the group consisting of substituted cyclopentadienyl, indenyl, tetrahydroindenyl, azurenyl, fluorenyl, azapentalenyl, thiapentalenyl or oxapentalenyl, which form a sandwich structure with atom M1 therebetween, R1 and R2 are identical or different and are each a hydrogen atom, an alkyl group of from 1 to about 10 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, an aryloxy group of from about 6 to about 10 carbon atoms, an alkenyl group of from 2 to about 10 carbon atoms, an OH group, a halogen atom, or a NR232 group, where R32 is an alkyl group of from 1 to about 10 carbon atoms or an aryl group of from 6 to about 14 carbon atoms, or R1 and R2 form one or more ring system(s), M1 is a metal of group IVb of the Periodic Table of the Elements, R9 is a bridge between the ligands L1 and L2 having one of the structures: where R40 and R41, are identical or different, with or without heteroatoms, when R40 and R41 are identical they are selected from the group consisting of a cyclic or non-cyclic alkyl group having from 2 to about 30 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from about 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group and an arylalkenyl group of from 8 to about 40 carbon atoms, when R40 and R41 are different one of either R40 and R41 is selected from the group consisting of a cyclic or non-cyclic alkyl group having from 4 to about 40 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group and an arylalkenyl group of from 8 to about 40 carbon atoms, and the other of R40 and R41 is selected from the group consisting of a cyclic or non-cyclic alkyl group having from 1 to 40 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group and an arylalkenyl group of from 8 to about 40 carbon atoms, M12 is silicon, germanium or tin, and wherein the mixture of racemic and meso isomers as synthesized has a weight ratio of racemic to meso isomers of greater than 5:1. 2. The composition of claim 1 wherein L1 is a substituted cyclopentadienyl, indenyl, tetrahydroindenyl, azurenyl, fluorenyl, azapentalenyl, thiapentalenyl or oxapentalenyl, L2 is a substituted indenyl, tetrahydroindenyl, azurenyl, fluorenyl, azapentalenyl, thiapentalenyl or oxapentalenyl, and the bridging unit R9 is R40R41Si═, R40R41Ge═, R40R41C═ or--(R40R41C--CR40R41)--, where R40 and R41 are identical or different and are each an alkyl group of from 2 to about 30 carbon atoms, an arylalkyl group of from 7 to about 14 carbon atoms or an alkylaryl group of from 7 to about 14 carbon atoms. 3. The composition of claim 1 wherein R40 and R41 are different, R40 is a C4-C30 cyclic or non-cyclic alkyl group and R41 is a C1-C30 cyclic or non-cyclic alkyl group. 4. The composition of claim 1 wherein L1 and L2 are identical or different and are each a substituted indenyl, azurenyl, fluorenyl, azapentalenyl, thiapentalenyl or oxapentalenyl, and the bridging unit R9 is R40R41Si═ or R40R41Ge═, where R40 and R41 are identical or different and are propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl. 5. The composition of claim 4 wherein R40 and R41 are different, R40 is butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl, and R41 is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl. 6. The composition of claim 1 wherein the weight ratio of racemic to meso isomers is greater than 10:1. 7. The composition of claim 1 wherein the weight ratio of racemic to meso isomer is greater than 15:1. 8. The composition of claim 1 wherein the weight ratio of racemic to meso isomers is greater than 20:1. 9. The composition of claim 1 wherein the compound has the formula: where R3, R4, R5, R6, R7, R8 and also R3', R4', R5', R6', R7' and R8' are identical or different and are each a hydrogen atom or a linear, cyclic or branched group, with or without heteroatoms, selected from an alkyl group of from 1 to about 10 carbon atoms, an alkenyl group of from 2 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, an arylalkenyl group of from 8 to about 40 carbon atoms, or a substituted or unsubstituted alkylsilyl or arylsilyl group, with the proviso that R3 and R3' are not hydrogen, and wherein two adjacent radicals R5, R6 or R5', R6', or R6, R7or R6', R7', or R7, R8, or R7', R8' can form a hydrocarbon ring system. 10. The composition of claim 9 wherein at least one of R3, R4, R5, R6, R7, R8, R3', R4', R5', R6', R7' and R8' includes a heteroatom selected from the group consisting of Si, B, Al, O, S, N, P, F, Cl and Br. 11. The composition of claim 9 where M1 is zirconium or hafnium, R1 and R2 are identical or different and are an alkyl group of from 1 to about 10 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms, or a halogen atom, or R1 and R2 together form one or more ring system(s), R3 and R3', are identical or different and are each a linear, cyclic or branched group, with or without a halogen, selected from the group consisting of an alkyl group of from 1 to about 10 carbon atoms and an alkenyl group of from 2 to about 10 carbon atoms, R4, R5, R6, R7, R8 and also R4', R5', R6', R7' and R8' are identical or different and are each a hydrogen atom, or a substituted or unsubstituted alkylsilyl or arylsilyl group, or a linear, cyclic or branched group, with or without heteroatoms, or an alkyl group of from 1 to about 10 carbon atoms, an aryl group of from 6 to about 10 carbon atoms, or the two adjacent radicals R5, R6 and R5', R6' may form a hydrocarbon ring system, R9 is R40R41Si═, R40R41Ge═, R40 R41C═ or--(R40R41C--CR40R41)--, where R40 and R41 are identical or different and are each an alkyl group of from 2 to about 30 carbon atoms, an arylalkyl group of from 7 to about 14 carbon atoms or an alkylaryl group of from 7 to about 14 carbon atoms. 12. The composition of claim 9 wherein R40 and R41 are different, R40 is an alkyl group of from 4 to about 30 carbon atoms, and R41 is a an alkyl group of from 1 to about 30 carbon atoms. 13. The composition of claim 9 wherein M1 is zirconium, R3 and R2 are identical or different and are methyl, chlorine or phenolate, R3 and R3', are identical or different and are each a linear, cyclic or branched group, with or without a halogen, and are selected from the group consisting of an alkyl group of from 1 to about 10 carbon atoms and an alkenyl group of from 2 to about 10 carbon atoms, R4 and R4' are hydrogen, R5, R6, R7, R8 and R5', R6', R7', R8' are identical or different and are each a hydrogen atom or a linear, cyclic or branched alkyl group of from 1 to about 10 carbon atoms, or an aryl group of from 6 to about 10 carbon atoms, or the two adjacent radicals R5, R6 and R5', R6' form a hydrocarbon ring system, and R9 is R40R41Si═ or R40R41Ge═, where R40 and R41 are identical or different and are propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl. 14. The composition of claim 13 wherein R40 and R41 are different and R40 is butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl and R41 is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl. 15. The composition of claim 1 wherein the compound has the formula: where R3, R4, R5, R6, R7, R8 and also R3', R4', R5', R6', R7' and R8' are identical or different and are each a hydrogen atom, or a linear, cyclic or branched hydrocarbon group with or without heteroatoms and selected from an alkyl group of from 1 to about 10 carbon atoms, an alkenyl group of from 2 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms or an arylalkenyl group of from 8 to about 40 carbon atoms, or a substituted or unsubstituted alkylsilyl or arylsilyl group, with the proviso that R3 and R3' are not hydrogen and that R5 and R5'are identical or different and are each a substituted or unsubstituted aryl group of from 6 to 20 carbon atoms. 16. The composition of claim 15 wherein at least one of R3, R4, R5, R6, R7, R8, R3', R4', R5', R6', R7' and R8' includes a heteroatom selected from the group consisting of Si, B, Al, O, S, N, P, F, Cl and Br. 17. The composition of claim 15 wherein M1 is zirconium or hafnium, R1 and R2 are identical or different and are an alkyl group of from 1 to about 10 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms or a halogen atom, or R1 and R2 together form one or more ring system(s), and R3 and R3', are identical or different and are each a linear, cyclic or branched group, with or without a halogen, and selected from the group consisting of an alkyl group of from 1 to about 10 carbon atoms and an alkenyl group of from 2 to about 10 carbon atoms, and R4, R6, R7, R8 and also R4', R6', R7' and R8' are identical or different and are each a hydrogen atom or a linear, cyclic or branched alkyl group of from 1 to about 10 carbon atoms, with or without a heteroatom, R5 and R5' are identical or different and are each a substituted aryl group of from 6 to about 20 carbon atoms, R9 is R40R41Si═, R40R41Ge═, R40R41C═ or (R40R41C--R40R41)--, where R40 and R41 are identical or different and are each an alkyl group of from 2 to about 30 carbon atoms, an arylalkyl group of from 7 to about 14 carbon atoms or an alkylaryl group of from 7 to about 14 carbon atoms. 18. The composition of claim 17 wherein R40 and R41 are different, R40 is a cyclic or non-cyclic alkyl group of from 4 to about 30 carbon atoms and R41 is a cyclic or non-cyclic alkyl group of from 1 to about 30 carbon atoms. 19. The composition of claim 15 wherein M1 is zirconium, R1 and R2 are identical or different and are an alkyl group of from 1 to about 10 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms or a halogen atom, or R1 and R2 together form one or more ring system(s), R3 and R3' are identical or different and are each a linear, cyclic or branched methyl, ethyl, propyl, butyl, pentyl or hexyl, R4 and R4' are both hydrogen, R6, R7, R8 and also R6', R7' and R8' are identical or different and are each a hydrogen atom or a linear, cyclic or branched alkyl group of from 1 to about 10 carbon atoms, with or without a heteroatom, R5 and R5' are identical or different and are naphthyl, para-(C1-C10-alkyl)phenyl, para-(C1-C10-fluoroalkyl)phenyl, meta-(C1-C10-alkyl)phenyl, meta-(C1-C10-alkyl)phenyl, meta, meta'-(C1-C10-alkyl)2phenyl or meta, meta'-(C1-C10-fluoroalkyl)2phenyl, and R9 is R40R41Si═ or R40R41Ge═. 20. The composition of claim 19 wherein R1 and R2 are identical and are methyl, chlorine, or phenolate. 21. The composition of claim 19 wherein R40 and R41 are different and R40 is butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl, and R41 is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl,or cyclohexyl. 22. The composition of claim 1 wherein the compound has the formula: where R4, R5, R6, R7, R8 and also R4', R5', R6', R7' and R8' are identical or different and are each a hydrogen atom, a linear, cyclic or branched hydrocarbon group, with or without heteroatoms, and selected from the group consisting of an alkyl group of from 1 to about 10 carbon atoms, an alkenyl group of from 2 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms or an arylalkenyl group of from 8 to about 40 carbon atoms, or a substituted or unsubstituted alkylsilyl or arylsilyl group, with the proviso that R5 and R5' are identical or different and are each a substituted aryl group of from 6 to about 40 carbon atoms, R3 is a linear hydrocarbon group, with or without a heteroatom, and selected from the group consisting of an alkyl group of from 1 to about 20 carbon atoms, an aryl substituted alkyl group of from 7 to about 40 carbon atoms and an aryl substituted alkenyl group of from 8 to about 40 carbon atoms, R3' is a hydrocarbon group, cyclic or branched in the α position, with or without a heteroatom, and selected from the group consisting of an alkyl group of from 3 to about 20 carbon atoms, an alkenyl group of from 3 to about 20 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms and an arylalkenyl group of from 8 to about 40 carbon atoms. 23. The composition of claim 22 wherein M1 is zirconium or hafnium, R1 and R2 are identical or different and are an alkyl group of from 1 to about 10 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms or a halogen atom, or R1 and R2 together form one or more ring system(s), R3 is a linear alkyl group of from 1 to about 10 carbon atoms or an alkenyl group of from 2 to about 10 carbon atoms, with or without a halogen, R3' is a hydrocarbon group, cyclic or branched in the α position and selected from the group consisting of an alky group of from 3 to about 20 carbon atoms an alkenyl group of from 3 to about 20 carbon atoms, or an alkylaryl group of from 7 to about 20 carbon atoms, R4, R6, R7, R8 and also R4', R6', R7' and R8' are identical or different and are each a hydrogen atom or a linear, cyclic or branched alkyl group of from 1 to about 10 carbon atoms, with or without a halogen, R5 and R5' are identical or different and are each a substituted aryl group of from 6 to about 40 carbon atoms, selected from para-(C1-C10-alkyl)phenyl,meta-(C1-C10-alkyl)phenyl, meta, meta'-(C1-C10-alkyl)2phenyl, and R9 is R40R41Si═, R40R41Ge═, R40R41 C═ or--(R40R41C--CR40R41)--, where R40 and R41 are identical or different and are each an alkyl group of from 2 to about 30 carbon atoms, an arylalkyl group of from 7 to about 14 carbon atoms or an alkylaryl group of from 7 to about 14 carbon atoms. 24. The composition of claim 22 wherein R40 and R41 are different, R40 is a cyclic or non-cyclic alkyl group of from 4 to about 30 carbon atoms and R41 is a cyclic or non-cyclic alkyl group of from 1 to about 30 carbon atoms. 25. The composition of claim 22 where M1 is zirconium, R1 and R2 are identical and are methyl, chlorine, or phenolate, R3 is methyl, ethyl, n-propyl, n-butyl, n-pentyl or n-hexyl, R3' is iso-propyl, sec-butyl, cyclobutyl, 1-methyl-butyl, 1-ethyl-butyl, 1-methyl-pentyl, cyclopentyl, cyclohexyl, cyclopent-2-enyl, cyclopent-3-enyl, cyclohex-2-enyl, cyclohex-3-enyl or para-methyl-cyclohexyl, R4 and also R4' are hydrogen, and R6, R7, R8 and also R6', R7' and R8' are identical or different and are each a hydrogen atom or a linear, cyclic or branched alkyl group of from 1 to about 10 carbon atoms, with or without a heteroatom, and, R5 and R5' are identical or different and are p-isopropyl-phenyl, p-tert-butyl-phenyl, p-s-butyl-phenyl, p-cyclohexyl-phenyl, p-trimethylsilyl-phenyl, p-adamantyl-phenyl, p-(trisfluor)trimethyl-phenyl, m,m'-dimethyl-phenyl, and R9 is R40R41Si═ or R40R41Ge═. 26. The composition of claim 25 wherein R40 and R41 are different and R40 is butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl, and R41 is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, cyclopentyl, or cyclohexyl. 27. The composition of claim 1 wherein the synthesized compound is selected from the group consisting of: A-(2-isopropyl-4-(p-isopropyl-phenyl)indenyl)(2-methyl-4-(p-isopropyl-phenyl) indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-tert-butyl-phenyl)indenyl)(2-methyl-4-(p-tert-butyl-phenyl) indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-tert-butyl-phenyl)indenyl)(2,7-dimethyl-4-(p-tert-butyl-phenyl) indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-tert-butyl-phenyl)indenyl)(2,5,6, 7-tetramethyl-4-(p-tert-butyl-phenyl)indenyl)-zirconiumdichloride, A-(2-isopropyl-6-methyl-4-(p-tert-butyl-phenyl)indenyl)(2, 6-dimethyl-4-(p-tert-butyl-phenyl)indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-sec-butyl-phenyl)indenyl)(2-methyl-4-(p-sec-butyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-cyclohexyl-phenyl)indenyl)(2-methyl-4-(p-cyclohexyl-phenyl) indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-trimethylsilyl-phenyl)indenyl)(2-methyl-4-(p-trimethylsilyl-phenyl)indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-adamantyl-phenyl)indenyl)(2-methyl-4-(p-adamantyl-phenyl)indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-tris(trifluoromethyl)methyl-phenyl) indenyl)(2-methyl-4-(p-tris(trifluoromethyl)methyl-phenyl)indenyl)-zirconiumdichloride, A-(2-isopropyl-4-phenyl-indenyl)(2-methyl-4-(p-tert-butyl-phenyl)indenyl)-zirconiumdichloride; A-(2-isopropyl-4-(p-tert-butyl-phenyl)indenyl) (2-methyl-4-phenyl-indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-tert-butyl-phenyl)indenyl)(2, 7-dimethyl-4-phenyl-indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-tert-butyl-phenyl)indenyl)(2,5,6, 7-tetramethyl-4-phenyl-indenyl)-zirconiumdichloride, A-(2-isopropyl-6-methyl-4-(p-tert-butyl-phenyl)indenyl)(2, 6-dimethyl-4-phenyl-indenyl)-zirconiumdichloride, A-(2-isopropyl-4-phenyl-indenyl)(2,7-dimethyl-4-(p-tert-butyl-phenyl)indenyl)-zirconiumdichloride, A-(2-isopropyl-4-phenyl-indenyl)(2,5,6,7-tetramethyl-4-(p-tert-butyl-phenyl) indenyl)-zirconiumdichloride, A-(2-isopropyl-6-methyl-4-phenyl-indenyl)(2,6-dimethyl-4-(p-tert-butyl-phenyl) indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(p-tert-butyl-phenyl)indenyl)(2-methyl-4-(4-naphthyl)-indenyl) indenyl)-zirconiumdichloride, A-(2-isopropyl-4-(4-naphthyl)-indenyl)indenyl)(2-methyl-4-(p-tert-butyl-phenyl) indenyl)-zirconiumdichloride, A-bis(4-naphthyl-indenyl)zirconiumdichloride, A-bis(2-methyl-benzo-indenyl)zirconiumdichloride A-bis(2-methyl-indenyl)zirconiumdichloride, A-bis(2-methyl-4-(1-naphthyl)-indenyl)zirconiumdichloride, A-bis(2-methyl-4-(2-naphthyl)-indenyl)zirconiumdichloride, A-bis(2-methyl-4-phenyl-indenyl)zirconiumdichloride, A-bis(2-methyl-4-t-butyl-indenyl)zirconiumdichloride, A-bis(2-methyl-4-isopropyl-indenyl)zirconiumdichloride, A-bis(2-methyl-4-ethyl-indenyl)zirconiumdichloride, A-bis(2-methyl-4-acenaphth-indenyl)zirconiumdichloride, A-bis(2,4-dimethyl-indenyl)zirconiumdichloride, A-bis(2-ethyl-indenyl)zirconiumdichloride, A-bis(2-ethyl-4-ethyl-indenyl)zirconiumdichloride, A-bis(2-ethyl-4-phenyl-indenyl)zirconiumdichloride, A-bis(2-methyl-4,6 diisopropyl-indenyl)zirconiumdichloride, A-bis(2-methyl-4,5 diisopropyl-indenyl)zirconiumdichloride, A-bis(2,4,6-trimethyl-indenyl)zirconiumdichloride, A-bis(2,5,6-trimethyl-indenyl)zirconiumdichloride, A-bis(2,4,7-trimethyl-indenyl)zirconiumdichloride, A-bis(2-methyl-5-isobutyl-indenyl)zirconiumdichloride, A-bis(2-methyl-5-t-butyl-indenyl)zirconiumdichloride, A-bis(2-methyl-4-(tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4-ethyl-phenyl)-indenyl)zirconiumdichloride, A-bis(2-methyl-4-(4-trifluoromethyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4-methoxy-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4-tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4-methyl-phenyl)-indenyl)zirconiumdichloride, A-bis(2-ethyl-4-(4-ethyl-phenyl)-indenyl)zirconiumdichloride, A-bis(2-ethyl-4-(4-trifluoromethyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4-methoxy-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4-tert-butyl-phenyl)-indenyl) zirconiumdimethyl, A-bis(2-methyl-4-(4-methyl-phenyl)-indenyl)zirconiumdimethyl, A-bis(2-methyl-4-(4-ethyl-phenyl)-indenyl)zirconiumdimethyl, A-bis(2-methyl-4-(4-trifluoromethyl-phenyl)-indenyl) zirconiumdimethyl, A-bis(2-methyl-4-(4-methoxy-phenyl)-indenyl)zirconiumdimethyl, A-bis(2-ethyl-(4-tert-butyl-phenyl)-indenyl)zirconiumdimethyl, A-bis(2-ethyl-4-(4-methyl-phenyl)-indenyl)zirconiumdimethyl, A-bis(2-ethyl-4-(4-ethyl-phenyl)-indenyl)zirconiumdimethyl, A-bis(2-ethyl-4-(4-triflouromethyl-phenyl)-indenyl) zirconiumdimethyl, A-bis(2-ethyl-4-(4-methoxy-phenyl)-indenyl)zirconiumdimethyl, A-bis(2-isopropyl-4-(tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4-ethyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4-trifluoromethyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4-methoxy-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-tert-butyl-phenyl)-indenyl) hafniumdichloride, A-bis(2-isopropyl-4-(4'-tert-butyl-phenyl)-indenyl) titaniumdichloride, A-bis(2-isopropyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-n-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-hexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl 1-4-(4'-sec-butyl-phenyl)-indenyl)zirconiumdichloride, A-bis(2-isopropyl-4-phenyl)-indenyl)zirconiumdichloride, A-bis(2-isopropyl-4-(4-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-ethyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-n-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-hexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-pentyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-cyclohexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-sec-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-isopropyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4'-tert-butyl-phenyl)-indenyl) hafniumdichloride, A-bis(2-methyl-4-(4'-tert-butyl-phenyl)-indenyl) titaniumdichloride, A-bis(2-methyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4'-n-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4'-hexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4'-sec-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-phenyl-indenyl)zirconiumdichloride, A-bis(2-ethyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4'-ethyl-phenyl)-indenyl)zirconiumdichloride, A-bis(2-ethyl-4-(4'-n-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4'-hexyl-phenyl)-indenyl)zirconiumdichloride, A-bis(2-ethyl-4-(4'-pentyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4'-cyclohexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4'-sec-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-ethyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-propyl-4-phenyl-indenyl)zirconiumdichloride, A-bis(2-n-propyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-propyl-4-(4'-ethyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-propyl-4-(4'-iso-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-propyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-propyl-4-(4'-hexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-propyl-4-(4'-cyclohexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-propyl-4-(4'-sec-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-propyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-phenyl-indenyl)zirconiumdichloride, A-bis(2-n-butyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-(4'-ethyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-(4'-n-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-(4'-iso-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-(4'-hexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-(4'-cyclohexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-(4'-sec-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-n-butyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-hexyl-4-phenyl-indenyl)zirconiumdichloride, A-bis(2-hexyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-hexyl-4-(4'-ethyl-phenyl)-indenyl)zirconiumdichloride, A-bis(2-hexyl-4-(4'-n-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-hexyl-4-(4'-iso-propyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-hexyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-hexyl-4-(4'-n-hexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-hexyl-4-(4'-cyclohexyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-hexyl-4-(4'-sec-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-hexyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdichloride, A-bis(2-methyl-4-(4'-tert-butyl-phenyl)-indenyl)zirconiumbis (dimethylamine), A-bis(2-ethyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdibenzyl, A-bis(2-methyl-4-(4'-tert-butyl-phenyl)-indenyl) zirconiumdimethyl, A-(2-methyl-4-azapentalene)(2-methyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-5-azapentalene)(2-methyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-6-azapentalene)(2-methyl-4-(4'-methyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4-(4'-ethyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-4-thiapentalene)(2-methyl-4-(4'-n-propyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4-(4'-isopropyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-6-azapentalene)(2-methyl-4-(4'-isopropyl-phenyl)-indenyl)-zirconiumdichloride, A-(2,5-dimethyl-6-thiapentalene)(2-methyl-4-(4'-isopropyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-6-oxapentalen)(2-methyl-4-(4'-isopropyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-6-azapentalene)(2-methyl-4-(4'-n-butyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-5-thiapentalene)(2-methyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-4-oxapentalene)(2-methyl-4-(4'-n-butyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-4-thiapentalene)(2-methyl-4-(4'-s-butyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-4-oxapentalene)(2-methyl-4-(4'-s-butyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4-(4'-tert-butyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-6-azapentalene)(2-methyl-4-(4'-tert-butyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4-(4'-n-pentyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-N-phenyl-6-azapentalene)(2-methyl-4-(4'-n-pentyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-oxapentalene)(2-methyl-4-(4'-n-pentyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4-(4'-n-hexyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-thiapentalene)(2-methyl-4-(4'-n-hexyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-6-thiapentalene)(2-methyl-4-(4'-n-hexyl-phenyl)-indenyl)-zirconiumdichloride, A-(2,5-dimethyl-4-thiapentalene)(2-methyl-4-(4'-n-hexyl-phenyl)-indenyl)-zirconiumdichloride, A-(2,5-dimethyl-6-thiapentalene)(2-methyl-4-(4'-n-hexyl-phenyl)-indenyl)-zirconiumdichloride, A-(2,5-dimethyl-6-thiapentalene)(2-methyl-4-(4'-cyclohexyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4-(4'-trimethylsilyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-thiapentalene)(2-methyl-4-(4'-trimethylsilyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-5-thiapentalene)(2-methyl-4-(4'-trimethylsilyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-6-thiapentalene)(2-methyl-4-(4'-trimethylsilyl-phenyl)-indenyl)-zirconiumdichloride, A-(2,5-dimethyl-4-azapentalene)(2-methyl-4-(4'-adamantyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-thiapentalene)(2-methyl-4-(4'-adamantyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-6-thiapentalene)(2-methyl-4-(4'-adamantyl-phenyl)-indenyl)-zirconiumdichloride, A-(2,5-dimethyl-4-thiapentalene)(2-methyl-4-(4'-adamantyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4-(4'-tris (trifluoromethyl)methyl-phenyl)-indenyl)-zirconiumdichloride, A-(2,5-dimethyl-4-azapentalene)(2-methyl-4-(4'-tris (trifluoromethyl)methyl-phenyl)-indenyl) zirconiumdichloride, A-(2-methyl-4-thiapentalene)(2-methyl-4-(4'-tris (trifluoromethyl)methyl-phenyl)-indenyl)zirconiumdichloride, A-(2-methyl-6-thiapentalene)(2-methyl-4-(4'-tris (trifluoromethyl)methyl-phenyl)-indenyl)zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-ethyl-4-(4'-tert-butyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-5-azapentalene)(2-n-butyl-4-(4'-tert-butyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-N-phenyl-6-azapentalene)(2-methyl-4-(4'-tert-butyl-phenyl)-indenyl)-zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methylindenyl) zirconiumdichloride, A-(2-methyl-N-phenyl-4-azapentalene)(2-methylindenyl) zirconiumdichloride, A-(2-methyl-4-thiapentalene)(2-methylindenyl) zirconiumdichloride, A-(2-methyl-5-thiapentalene)(2-methylindenyl) zirconiumdichloride, A-(2-methyl-6-thiapentalene)(2-methylindenyl) zirconiumdichloride, A-(2-methyl-4-azapentalene)(indenyl)zirconiumdichloride, A-(2-methyl-5-azapentalene)(indenyl)zirconiumdichloride, A-(2-methyl-6-azapentalene)(indenyl)zirconiumdichloride, A-(2-methyl-N-phenyl-4-azapentalene)(indenyl) zirconiumdichloride, A-(2-methyl-N-phenyl-5-azapentalene)(indenyl) zirconiumdichloride, A-(2-methyl-N-phenyl-6-azapentalene)(indenyl) zirconiumdichloride, A-(2,5-dimethyl-N-phenyl-6-azapentalene)(indenyl) zirconiumdichloride, A-(2-methyl-4-thiapentalene)(indenyl)zirconiumdichloride, A-(2-methyl-5-thiapentalene)(indenyl)zirconiumdichloride, A-(2-methyl-6-thiapentalene)(indenyl)zirconiumdichloride, A-(2,5-dimethyl-4-thiapentalene)(indenyl)zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-5-azapentalene)(2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-6-azapentalene)(2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-N-phenyl-4-azapentalene) (2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-N-phenyl-5-azapentalene) (2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-4-thiapentalene)(2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-5-thiapentalene)(2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-6-thiapentalene)(2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-4-oxapentalene)(2-methyl-4-phenyl-indenyl) zirconiumdichloride, A-(2-methyl-4-azapentalene)(2-methyl-4,5-benzo-indenyl) zirconiumdichloride, A-(2-methyl-N-phenyl-4-azapentalene)(2-methyl-4, 5-benzo-indenyl) zirconiumdichloride, A-(2-methyl-N-phenyl-5-azapentalene)(2-methyl-4, 5-benzo-indenyl) zirconiumdichloride, A-(2-methyl-N-phenyl-6-azapentalene)(2-methyl-4, 5-benzo-indenyl) zirconiumdichloride, A-bis(2-methyl-4-azapentalene)zirconiumdichloride, A-bis(2-methyl-N-phenyl-4-azapentalene)zirconiumdichloride, A-bis(2-methyl-4-thiapentalene)zirconiumdichloride, wherein A is selected from the group consisting of structural isomers of Dipropylsilanediyl, Dibutylsilanediyl, Dipentylsilanediyl, Dihexylsilanediyl, Diheptylsilanediyl, Dioctylsilanediyl, Dinonylsilanediyl, Didecylsilanediyl, Diundecylsilanedyl, Didodecylsilanediyl, Di(cyclopentyl)silanediyl, Cyclohexyl(methyl)silanedyl, Dipropylgermanediyl, Dibutylgermanediyl, Dipentylgermanediyl, Dihexylgermanediyl, Diheptylgermanediyl, Dioctylgermanediyl, Dinonylgermanediyl, Didecylgermanediyl, Diundecylgermanediyl or Didodecylgermanediyl, Hexyl(methyl)germanediyl, Butyl(methyl)silanediyl, Butyl(ethyl)silanediyl, Butyl(propyl)silanediyl, Pentyl(methyl)silanediyl, Pentyl(ethyl)silanediyl, Pentyl(propyl)silanediyl, Hexyl(methyl)silanediyl, Hexyl(ethyl)silanediyl and Hexyl(propyl)silanediyl. 28. The composition of claim 27 where the units A are: Di-n-propylsilanediyl, Di-n-butylsilanediyl, Di-n-pentylsilanediyl, Di(cyclopentyl)silanediyl, Di-n-hexylsilanediyl, Cyclohexyl(methyl)silanediyl, (n-butyl)(methyl)silanediyl or (n-hexyl)(methyl)silanediyl. 29. A process for the production of a mixture of racemic and meso isomers of metallocene compounds comprising the steps of: a) providing a ligand system of the formula wherein R9 is a bridge having one of the structures: where R40 and R41, can be identical or different, with or without heteroatoms, when R40 and R41 are identical they are selected from the group consisting of an alkyl group having from 2 to about 30 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from about 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group, or an arylalkenyl group of from 8 to about 40 carbon atoms, when R40 and R41 are different one of either R40 and R41 is selected from the group consisting of an alkyl group having from 4 to about 40 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group and an arylalkenyl group of from 8 to about 40 carbon atoms, and the other of R40 and R41 is selected from the group consisting of an alkyl group having from 1 to 40 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group and an arylalkenyl group of from 8 to about 40 carbon atoms, M12 is silicon, germanium or tin, and R3, R4, R5, R6, R7, R8 and also R3', R4', R5', R6', R7' and R8 are identical or different and are each a hydrogen atom, or a linear, cyclic or branched group, with or without heteroatoms, selected from the group consisting of an alkyl group of from 1 to about 10 carbon atoms, an alkenyl group of from 2 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms or an arylalkenyl group of from 8 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group, with the proviso that R3 and R3' are not hydrogen, or wherein two adjacent radicals R5, R6 or R5', R6', or R6, R7 or R6', R7', or R7, R8 or R7', R8' can form one or more hydrocarbon ring system(s), wherein said ligand system is produced by deprotonation of a compound of the formula with a base in an inert solvent at temperatures of-70째 C. to 80째 C.; and, b) combining said ligand system of formula LS with a compound having the formula M1X4 at a temperature of from about-70째 C. to about 80째 C., wherein M1 is zirconium, titanium or hafnium and X is a halogen, to provide a metallocene compound(s) having a weight ratio of racemic to meso isomers of greater than 5:1 as synthesized. 30. The process of claim 29 wherein the weight ratio of racemic to meso isomers is greater than 10:1 without any further separation of racemic from meso isomers. 31. The process of claim 29 wherein the weight ratio of racemic to meso isomers is greater than 15:1 without any further separation of racemic from meso isomers. 32. The process of claim 29 wherein the weight ratio of racemic to meso isomers is greater than 20:1 without any further sepration of racemic isomers from meso isomers. 33. A catalyst composition comprising: a) mixed isomers of at least one metallocene compound having the formula 1a: description="In-line Formulae" end="lead"R9L1 L2 M1R1R2 (formula 1a)description="In-line Formulae" end="tail" where L1 and L2 are identical or different ligands and are each a substituted mononuclear or polynuclear hydrocarbon radical selected from the group consisting of substituted cyclopentadienyl, indenyl, tetrahydroindenyl, azurenyl, fluorenyl, azapentalenyl, thiapentalenyl or oxapentalenyl, which form a sandwich structure with atom M1, therebetween, R1 and R2 are identical or different and are each a hydrogen atom, an alkyl group of from 1 to about 10 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, an aryloxy group of from about 6 to about 10 carbon atoms, an alkenyl group of from 2 to about 10 carbon atoms, an OH group, a halogen atom, or a NR232 group, where R32 is an alkyl group of from 1 to about 10 carbon atoms or an aryl group of from 6 to about 14 carbon atoms, or R1 and R2 form one or more ring system(s), M1 is a metal of group IVb of the Periodic Table of the Elements, R9 is a bridge between the ligands L1 and L2 having one of the structures: where R40 and R41, are identical or different, with or without heteroatoms, when R40 and R41 are identical they are selected from the group consisting of an alkyl group having from 2 to about 30 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from about 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group and an arylalkenyl group of from 8 to about 40 carbon atoms, when R40 and R41 are different one of either R40 and R41 is selected from the group consisting of an alkyl group having from 4 to about 40 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms, an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group and an arylalkenyl group of from 8 to about 40 carbon atoms, and the other of R40 and R41 is selected from the group consisting of an alkyl group having from 1 to 40 carbon atoms, a fluoroalkyl group of from 2 to about 10 carbon atoms, an alkoxy group of from 2 to about 10 carbon atoms an aryloxy group of from 6 to about 10 carbon atoms, an alkenyl group of from 3 to about 10 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms, a substituted or unsubstituted alkylsilyl or arylsilyl group and an arylalkenyl group of from 8 to about 40 carbon atoms, M2 is silicon, germanium or tin, and wherein the compound as synthesized has a ratio of racemic or pseudoracemic isomers to meso or pseudomeso isomers of greater than 5:1; b) at least one cocatalyst; and c) at least one porous support. 34. The catalyst composition of claim 33 wherein the cocatalyst is an aluminoxane having one of the following formulas wherein R is hydrogen, an alkyl group of from 1 to about 6 carbon atoms, an aryl group of from 6 to about 18 carbon atoms, or benzyl, and p is an integer from 2 to 50. 35. The catalyst composition system of claim 34 wherein the atomic ratio of aluminum from the aluminoxane to the metal M1 of the metallocene ranges from about 10:1 to about 1000:1. 36. The catalyst composition of claim 33 wherein the cocatalyst is a Lewis acid having the formula description="In-line Formulae" end="lead"M2X1X2X3description="In-line Formulae" end="tail" wherein M2 is selected from boron, aluminum or gallium, and X1, X2 and X3 are the same or different and are each individually hydrogen, an alkyl group of from 1 to about 20 carbon atoms, an aryl group of from 6 to about 15 carbon atoms, or an alkaryl, aralkyl, halo-alkyl or haloaryl group having 1 to about 10 carbon atoms in the alkyl radical and from 6 to about 20 carbon atoms in the aryl radical, wherein the halogen component can be fluorine, chlorine, bromine or iodine. 37. The catalyst composition of claim 33 wherein the Lewis acid is selected from the group consisting of trimethylaluminium, triethylaluminum, triisobutylaluminum, tributylaluminum, trifluoroborane, triphenylborane, tris(4-fluorophenyl)borane, tris(3,5-difluorophenyl)borane, tris(4-fluoromethylphenyl)borane, tris(2,4,6-trifluorophenyl)borane, tris(pentafluorophenyl)borane, tritolylborane, tris(3,5-dimethyl-phenyl)borane, tris(3,5-difluorophenyl)borane and tris (3,4,5-trifluorophenyl)borane. 38. The catalyst composition of claim 33 wherein the cocatalyst is an ionic compound containing a non-coordinating anion selected from the group consisting of tetrakis(pentafluorophenyl)borate, tetraphenylborate, SbF6--, CF3SO3- and ClO4-. 39. The catalyst composition of claim 33 wherein the porous support is selected from the group consisting of inorganic oxides, inorganic salts, and polymer powders. 40. The catalyst composition of claim 33 wherein the porous support is selected from the group consisting of silica, alumina, aluminosilicates, zeolites, MgO, ZrO2, TiO2, B2O3, CaO, ZnO, ThO2, Na2O, K2O, Li2O, Na2CO3, K2CO3, CaCO3, MgCl2, Na2SO4, AL2(SO4)3, BaSO4, KNO3, Mg(NO3)2; AL(NO3)3 and combinations thereof. 41. The catalyst system of claim 33 wherein the porous support is selected from the group consisting of polyethylene, polypropylene, polybutene, polystyrene, divinylbenzene crosslinked polystyrene, polyvinyl chloride, acrylonitrile-butadiene-styrene copolymer, polyamide, polymethacrylate, polycarbonate, polyester, polyacetal and polyvinyl alcohol. 42. The catalyst composition of claim 33 wherein the cocatalyst is a reaction product of at least one compound of formulas (C) and/or (D) and/or (E) with at least one compound of formula (F), where R27 is a hydrogen atom or a boron-free C1-C40 carbon-containing group, selected from an alkyl group of from 1 to about 20 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms or an alkylaryl group of from 7 to about 40 carbon atoms, R7 and R18 are the same or different and are a hydrogen atom, a halogen atom, or a C1-C40 carbon-containing group, selected from an alkyl group of from 1 to about 20 carbon atoms, a haloalkyl group of from 1 to about 20 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, a haloaryl group of from 6 to about 20 carbon atoms, an aryloxy group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, a haloarylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms or a haloalkylaryl group of from 7 to about 40 carbon atoms or R17 may also be an--OSiR513 group, in which the R51 groups are the same or different and are each a hydrogen atom, a halogen atom, or a C1-C40 carbon-containing group, selected from an alkyl group of from 1 to about 20 carbon atoms, a haloalkyl group of from 1 to about 20 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, a haloaryl group of from 6 to about 20 carbon atoms, an aryloxy group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, a haloarylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms or a haloarylakyl group of from 7 to about 40 carbon atoms. D is an element of main Group VI of the periodic table of elements or an NR61 group, where R61 is a hydrogen atom or a C1-C20 hydrocarbon group, selected from an alkyl group of from 1 to about 20 carbon atoms or an aryl group of from 6 to about 20 carbon atoms, f is a whole number from 0 to 3, g is a whole number from 0 to 3 with f+g not equal to 0, and h is a whole number from 1 to 10. 43. The catalyst composition of claim 33 wherein the cocatalyst is a compound or a mixture of compounds of formulas (A) and/or (B) where R17 and R18 are the same or different and are a hydrogen atom, a halogen atom, a C1-C40 carbon-containing group, selected from an alkyl group of from 1 to about 20 carbon atoms, a haloalkyl group of from 1 to about 20 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, a haloaryl group of from 6 to about 20 carbon atoms, an aryloxy group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, a haloarylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms or a haloalkylaryl group of from 7 to about 40 carbon atoms or R17 may also be an--OSiR513 group, where the R51 groups are the same or different and are each a hydrogen atom, a halogen atom, a C1-C40 carbon-containing group, selected from an alkyl group of from 1 to about 20 carbon atoms, a haloalkyl group of from 1 to about 20 carbon atoms, an alkoxy group of from 1 to about 10 carbon atoms, an aryl group of from 6 to about 20 carbon atoms, a haloaryl group of from 6 to about 20 carbon atoms, an aryloxy group of from 6 to about 20 carbon atoms, an arylalkyl group of from 7 to about 40 carbon atoms, a haloarylalkyl group of from 7 to about 40 carbon atoms, an alkylaryl group of from 7 to about 40 carbon atoms or a halo alkylaryl group of from 7 to about 40 carbon atoms. 44. The catalyst composition of claim 33 wherein the cocatalyst is a compound or a mixture of compounds of the following formulas 45. The catalyst composition of claim 33 wherein the cocatalyst is 46. The catalyst composition of claim 33 wherein the cocatalyst is 47. A process for the polymerization of olefins comprising contacting one or more olefins each having from about 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 42. 48. A process for the polymerization of olefins comprising contacting one or more olefins each having from about 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 43. 49. A process for the polymerization of olefins comprising contacting one or more olefins each having from about 2 to about 20 carbon atoms under polymerization reaction conditions .with the catalyst composition of claim 44. 50. A process for the polymerization of olefins comprising contacting one or more olefins each having from about 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 45. 51. A process for the polymerization of olefins comprising contacting one or more olefins each having from about 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 46. 52. A process for the polymerization of olefins comprising contacting one or more olefins each having from about 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 33. 53. A process for the polymerization of olefins comprising contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 34. 54. A process for the polymerization of olefins comprising contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 35. 55. A process for the polymerization of olefins comprising contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 36. 56. A process for the polymerization of olefins comprising contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 37. 57. A process for the polymerization of olefins comprising contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 38. 58. A process for the polymerization of olefins comprising contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 39. 59. A process for the polymerization of olefins comprising contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 40. 60. A process for the polymerization of olefins comprising contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with the catalyst composition of claim 41. 61. The process of claim 52 wherein at least one olefin is a 1-olefin. 62. The process of claim 52 wherein at least one olefin has the formula description="In-line Formulae" end="lead"Rm--CH═CH--Rndescription="In-line Formulae" end="tail" wherein Rm and Rn can be identical or different and are each individually a hydrogen atom or a radical having from 1 to about 20 carbon atoms or Rm and Rn together can form one or more rings. 63. The process of claim 52 wherein the olefins include ethylene and one or more 1-olefins having from 4 to about 20 carbon atoms. 64. The process of claim 52 wherein the olefins include propylene. 65. The process of claim 52 wherein the olefins include propylene and ethylene. 66. The process of claim 52 wherein the olefins include propylene and one or more 1-olefins having from 4 to about 20 carbon atoms. 67. The process of claim 52 wherein the olefins include propylene, ethylene and one or more 1-olefins having from 4 to about 20 carbon atoms. 68. A process for the polymerization of olefins comprising: contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with a catalyst composition including at least one compound having the formula 1 a as set forth in claim 1. 69. A process for the polymerization of olefins comprising: contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with a catalyst composition including at least one compound having the formula 1b as set forth in claim 9. 70. A process for the polymerization of olefins comprising: contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with a catalyst composition including at least one compound having the formula 1c as set forth in claim 15. 71. A process for the polymerization of olefins comprising: contacting one or more olefins each having from 2 to about 20 carbon atoms under polymerization reaction conditions with a catalyst composition including at least one compound having the formula 1d as set forth in claim 22.