Transition metal compound

Abstract

The present invention relates to zwitterionic neutral transition metal compounds. The compounds are suitable as catalyst components for the polymerization of olefins.

1. A zwitterionic transition metal compound of the formula I 
                 
 
       where
 L are identical or different and are each a π-ligand or an electron donor, n is equal to 1, 2, 3 or 4,  
 M is a metal atom of group IIIb, IVb, Vb or VIb of the Periodic Table of the Elements,  
 X is a heteroatom or a hydrocarbon group having 1-40 carbon atoms,  
 X′ is a hydrocarbon group having 1-40 carbon atoms,  
 A is an atom of group Ib, IIb, IIIa, IIIb, IVa, Va, Vb, VIb, VIIb or VIIIb of the Periodic Table of the Elements,  
 R 1  are identical or different and are each a perhalogenated C 1 -C 40 -hydrocarbon radical, and m is equal to 1, 2, 3, 4 or 5.  
 
     
     
       2. A transition metal compound as claimed in  claim 1 , wherein the radicals L are identical or different and are each a π-ligand. 
     
     
       3. A transition metal compound as claimed in  claim 1 , wherein the radicals L are identical or different and are each an unsubstituted or substituted cyclopentadienyl group. 
     
     
       4. A transition metal compound as claimed in  claim 1 , wherein the radicals L are linked to one another via a bridge. 
     
     
       5. A transition metal compound as claimed in  claim 1 , wherein n=2 when M is a metal atom of group IVb of the Periodic Table of the Elements. 
     
     
       6. A transition metal compound as claimed in  claim 1 , wherein
 M is a metal atom of group IVb of the Periodic Table of the Elements, n is equal to 2,  
 L are identical or different and are each a substituted or unsubstituted cyclopentadienyl group, where two radicals L are optionally linked to one another via a bridge Z and  
 Z is CR 2 R 3  or SiR 2 R 3  or a unit Si—(CR 2 R 3 ) x —Si which links two fragments L n M + XX′—A—R 1   m  with one another, where x is an integer from 0 to 10,  
 X and X′ together form a three-membered to five-membered hydrocarbon chain which can be saturated or unsaturated and are unsubstituted or substituted by one or more C 1 -C 20 -hydrocarbon radicals,  
 R 2  and R 3  are identical or different and are each a hydrogen atom, a halogen atom, a C 1 -C 20 -alkyl group, a C 1 -C 10 -fluoroalkyl group, a C 1 -C 10 -alkoxy group, a C 6 -C 14 -aryl group, a C 6 -C 10 -fluoroaryl group, a C 6 -C 10 -aryloxy group, a C 2 -C 10 -alkenyl group, a C 7 -C 40 -arylalkyl group, a C 7 -C 40 -alkylaryl group, a C 8 -C 40 -arylalkenyl group, or R 2  and R 3  together with the atoms connected them form one or more rings, and R 2  and R 3  are optionally bonded to L;  
 A is an atom of group Ib, IIb, IIIa, IVa, Va, Vb of the Periodic Table of the Elements,  
 R 1  are identical or different and are each a perfluorinated alkyl or aryl group having from 1 to 20 carbon atoms and  
 m is equal to 2, 3 or 4.  
 
     
     
       7. A transition metal compound as claimed in  claim 6 , wherein
 M is zirconium,  
 n is equal to 2,  
 L are identical or different and are each a substituted cyclopentadienyl group, where two radicals L are linked to one another via a bridge Z, where Z is CR 2 R 3  or SiR 2 R 3  and R 2  and R 3  are as defined in  claim 6 ,  
 X and X′ together form an unsaturated four-membered hydrocarbon chain whose hydrogen atoms are optionally replaced by C 1 -C 20 -alkyl groups,  
 A is boron atom,  
 R 1  are identical and are each a pentafluorophenyl group (C 6 F 5 ) and  
 m is equal to 3.  
 
     
     
       8. A catalyst component comprising at least one transition metal compound as claimed in  claim 1 . 
     
     
       9. A catalyst component as claimed in  claim 8 , additionally containing a support. 
     
     
       10. A process for preparing a compound according to  claim 1  of the formula I 
                 
 
       where
 L are identical or different and are each a π ligand or an electron donor, n is equal to 1, 2, 3 or 4,  
 M is a metal atom of group IIIb, IVb, Vb or VIb of the Periodic Table of the Elements,  
 X is a heteroatom or a hydrocarbon group having 1-40 carbon atoms,  
 X′ is a hydrocarbon group having 1-40 carbon atoms,  
 A is an atom of group Ib, IIb, IIIa, IIIb, IVa, Va, Vb, VIb, VIIb or VIIIb of the Periodic Table of the Elements,  
 R 1  are identical or different and are each a perhalogenated C 1 -C 40 -hydrocarbon radical, and m is equal to 1, 2, 3, 4 or 5, which comprises reacting a compound of the formula II 
                 
 
 
       with a compound of the formula III 
                 
                 
 
       and reacting the reaction product with a compound of the formula AR 1   m , where L, n, M, X, B,  X, X′, A, R 1  and m in the formulae II, III and AR 1   m  are as defined for the formula I and Hal is a halogen atom. 
     
     
       11. A zwitterionic transition metal compound of the formula 
                 
 
       wherein:
 L and L′ are identical or different and are each a substituted or unsubstituted cyclopentadienyl group;  
 Z is a bridge linking together said L and L′ and is a group of the formula CR 2 R 3  or SiR 2 R 3 ;  
 R 2  and R 3  are identical or different and are each a hydrogen atom, a halogen atom, a C 1 -C 20 -alkyl group, a C 1 -C 10 -fluoroalkyl group, a C 1 -C 10 -alkoxy group, a C 6 -C 14 -aryl group, a C 6 -C 10 -fluoroaryl group, a C 6 -C 10 -aryloxy group, a C 2 -C 10 -alkenyl group, a C 7 -C 40 -arylalkyl group, a C 7 -C 40 -alkylaryl group, a C 8 -C 40 -arylalkenyl group, or R 2  and R 3  together with the atoms connected them form one or more rings, and R 2  and R 3  are optionally bonded to L;  
 M is a metal atom of group IVb of the Periodic Table of the Elements;  
 X-X′ is a 3- to 5-membered saturated or unsaturated hydrocarbon chain which is unsubstituted or substituted by one or more C 1 -C 20 -hydrocarbon radicals; and  
 the R 1  radicals are identical or different and are each a perfluorinated alkyl or aryl group having from 1 to 20 carbon atoms.  
 
     
     
       12. A catalyst system for olefin polymerization comprising a transition metal compound of  claim 11  and, optionally, a catalyst support material. 
     
     
       13. A catalyst system as claimed in  claim 12 , wherein said catalyst system is essentially free of an aluminoxane except when said catalyst support material is present and is a solid aluminoxane. 
     
     
       14. The catalyst as claimed in  claim 8 , wherein M is titanium, zirconium or hafnium. 
     
     
       15. The catalyst as claimed in  claim 12 , wherein M is zirconium. 
     
     
       16. The catalyst as claimed in  claim 14 , wherein an unsubstituted or
 M is Zr,  
 n is equal to 2,  
 L are identical or different and are each a substituted cyclopentadienyl group, where two radicals L are linked to one another via a bridge Z, and  
 Z is CR 2 R 3  or SiR 2 R 3  or a unit Si—(CR 2 R 3 ) x —Si which links two fragments L n M + XX′A—R 1   m  with one another, where x is an integer from 0 to 10,  
 X and X′ together form a three-membered to five-membered (C 3 -C 5 )-alkyl chain which is saturated or unsaturated and are optionally substituted by C 1 -C 20 -hydrocarbon radicals,  
 A is a metal of group Ib, IIb, IIIb, IVa, Vb, of the Periodic Table of the Elements,  
 R 1  are identical or different and are each a pentafluorinated alkyl or aryl group having from 1 to 20 carbon atoms,  
 R 2  and R 3  are identical or different and are each a hydrogen atom, a halogen atom, a C 1 -C 20 -alkyl group, a C 1 -C 10 -fluoroalkyl group, a C 1 -C 10 -alkoxy group, a C 6 -C 14 -aryl group, a C 6 -C 10 -fluoroaryl group, a C 6 -C 10 -aryloxy group, a C 2 -C 10 -alkenyl group, a C 7 -C 40 -arylalkyl group, a C 7 -C 40 -alkylaryl group, a C 8 -C 40 -arylalkenyl group and  
 m is equal to 3.  
 
     
     
       17. The catalyst as claimed in  claim 8 , wherein
 M is zirconium,  
 n is equal to 2,  
 L are identical or different and are each a substituted cyclopentadienyl group, where two radicals L are bonded to one another via a bridge Z, where Z is CR 2 R 3  or SiR 2 R 3 ,  
 X and X′ together form an unsaturated four-membered (C 4 )-alkyl chain whose hydrogen atoms can also be replaced by C 1 -C 20 -alkyl groups,  
 A is a boron atom,  
 R 1  are identical and are each a pentafluorophenyl group (C 6 F 5 ),  
 R 2  and R 3  are identical or different and are each a hydrogen atom, a halogen atom, a C 1 -C 20 -alkyl group, a C 1 -C 10 -fluoroalkyl group, a C 1 -C 10 -alkoxy group, a C 6 -C 14 -aryl group, a C 6 -C 10 -fluoroaryl group, a C 6 -C 10 -aryloxy group, a C 2 -C 10 -alkenyl group, a C 7 -C 40 -arylalkyl group, a C 7 -C 40 -alkylaryl group, a C 8 -C 40 -arylalkenyl group and m is equal to 3.  
 
     
     
       18. The compound as claimed in  claim 1 , wherein the transition metal compound of the formula I is selected from the group consisting of 
       bis(cyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       bis(methylcyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       bis(n-butylcyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       bisindenylZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       (tert-butylamido)dimethyl(tetramethyl-η 5 -cyclopentadienyl)silaneZr +CH   2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       bis(2-methylbenzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbisindenylZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylbenzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       isopropylidene(cyclopentadienyl(fluorenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       isopropylidene(cyclopentadienyl)(indenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       [4-η 5 -cyclopentadienyl-4,7,7-trimethyl-(η 5 -4,5,6,7-tetrahydroindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ; 
         4 -η 5 -cyclopentadienyl- 4 , 7 , 7 -trimethyl-(η 5 - 4 , 5 , 6 , 7 -tetrahydroindenyl)Zr +CH   2   CHCHCH   2 B −(C   6 F 5 ) 3;   
       dimethylsilanediylbis(2-methylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbisindenylZr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylbenzoindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methyl-4-phenylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbisindenylZr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methylbenzoindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbisindenylZr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methylbenzoindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )C 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       methylphenylmethylene(fluorenyl)(cyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       diphenylmethylene(fluorenyl)(cyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       isopropylidene(3-methylcyclopentadienyl)(fluorenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(3-tert-butylcyclopentadienyl)(fluorenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       diphenylsilanediyl(3-(trimethylsilyl)cyclopentadienyl)(fluorenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbisindenylZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediyl(2-methyl-4,5-benzoindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediyl(2-methyl-4,5-benzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebisindenylZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylene(2-methyl-4,5-benzoindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylene(2-methyl-4,5-benzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylene(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-ethyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-ethyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2,3,5-trimethylcyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       1,6-{bis[methylsilylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,6-{bis[methylsilylbis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,6-{bis[methylsilylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,6-{bis[methylsilylbis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,6-{bis[methylsilyl(2-methyl-4-phenylindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,2-{bis[methylsilylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane;  
       1,2-{bis[methylsilylbis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane;  
       1,2-{bis[methylsilylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane;  
       1,2-{bis[methylsilylbis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane; and  
       1,2-{bis[methylsilyl(2-methyl-4-phenylindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane.  
     
     
       19. The catalyst as claimed in  claim 8 , wherein the transition metal compound of the formula I is selected from the group consisting of 
       bis(cyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       bis(methylcyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       bis(n-butylcyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       bisindenylZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       (tert-butylamido)dimethyl(tetramethyl-η 5 -cyclopentadienyl)silaneZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       bis(2-methylbenzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbisindenylZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylbenzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylbenzoindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbisindenylZr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methylbenzoindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       isopropylidene(cyclopentadienyl)(fluorenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       isopropylidene(cyclopentadienyl)(indenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       [4-η 5 -cyclopentadienyl-4,7,7-trimethyl-(η 5 -4,5,6,7-tetrahydroindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ; 
         4 -η 5 -cyclopentadienyl- 4 , 7 , 7 -trimethyl-(η 5-4,5,6,7-tetrahydroindenyl)Zr   +   CH   2   CHCHCH   2   B   − ( C   6   F   5 ) 3 ; 
       dimethylsilanediylbis(2-methylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbisindenylZr + OCH 2 CH 2 C 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylbenzoindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylbenzoindenyl)(2-methyl-4-phenylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + OCH 2 CH 2 CH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbisindenylZr + CH 2 CHCHCH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       dimethylsilanediylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 C(CH 3 )C(CH 3 )CH 2 B − (CF 3 ) 3 ;  
       methylphenylmethylene(fluorenyl)(cyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       diphenylmethylene(fluorenyl)(cyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       isopropylidene(3-methylcyclopentadienyl)(fluorenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediyl(3-tert-butylcyclopentadienyl)(fluorenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       diphenylsilanediyl(3-(trimethylsilyl)cyclopentadienyl)(fluorenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbisindenylZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediyl(2-methyl-4,5-benzoindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediyl(2-methyl-4,5-benzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediyl(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       phenylmethylsilanediylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebisindenylZr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylene(2-methyl-4,5-benzoindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylene(2-methyl-4,5-benzoindenyl)(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylene(2-methylindenyl)(4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-ethyl-4,6-diisopropylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       ethylenebis(2-ethyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       dimethylsilanediylbis(2,3,5-trimethylcyclopentadienyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ;  
       1,6-{bis[methylsilylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,6-{bis[methylsilylbis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,6-{bis[methylsilylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,6-{bis[methylsilylbis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,6-{bis[methylsilyl(2-methyl-4-phenylindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}hexane;  
       1,2-{bis[methylsilylbis(2-methyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane;  
       1,2-{bis[methylsilylbis(2-ethyl-4-phenylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane;  
       1,2-{bis[methylsilylbis(2-methyl-4-naphthylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane;  
       1,2-{bis[methylsilylbis(2-methyl-4,5-benzoindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane; and  
       1,2-{bis[methylsilyl(2-methyl-4-phenylindenyl)(2-methylindenyl)Zr + CH 2 CHCHCH 2 B − (C 6 F 5 ) 3 ]}ethane.  
     
     
       20. The compound as claimed in  claim 1 , wherein M is zirconium. 
     
     
       21. The compound as claimed in  claim 1 , wherein M is a metal atom group IVb of the Periodic Table of Elements.