Patent ID: 6469114
Filing Date: 2002-10-22
Classification: C08F,Y10S

Abstract:
A compound of the formula I, whereM1 is a metal of group IVb of the Periodic Table of the Elements, R1 and R2 are identical or different and are each a hydrogen atom, a C1-C10-alkyl group, a C1-C10-alkoxy group, a C6-C20-aryl group, a C6-C10-aryloxy group, a C2-C10-alkenyl group, an OH group, an N(R12)2 group, where R12 is a C1-C10-alkyl group or a C6-C14-aryl group, or a halogen atom, R3, R4, R6, R7, R8, R3â€², R4â€² are identical or different, and are each a hydrogen atom, a hydrocarbon group having from 1 to 40 carbon atoms which may be partially halogenated, halogenated, linear, cyclic or branched, an SR13 group or an OR13 group, where R13 is as defined for R4, with the proviso that R3 is not hydrogen, where R3â€² and R4â€² may also be joined to form a ring, and R5 is a C6-C40-aryl group which bears a substituent R14 in the para position relative to the point of linkage to the indenyl ring, whereR14 is a halogen atom F, Cl or Br, a C1-C20-alkyl radical, a C2-C20-alkenyl radical, a C6-C24-aryl radical, a C7-C40-arylalkyl radical, a C7-C40-alkylaryl radical, a C8-C40-arylalkenyl radical, where the hydrocarbon radicals may also be halogenated or partially halogenated by fluorine, chlorine or bromine, â€”N(R15)2, â€”P(R15)2, â€”SR15, â€”OR15, â€”Si(R15)3, â€”[N(R15)3]+ or â€”[P(R15)3]+, where R15 is as defined for R4, R16 can be identical or different despite having the same index and are hydrogen or as defined for R14 and any two adjacent radicals R16 may also be joined to form a ring, or one or more of the radicals R16 together with the radicals R6 or R4 and/or R14 form a ring, with the proviso that R14 may also be hydrogen when at least one of the radicals R16 is different from hydrogen, R9 is a bridge whereR10, R11 can be identical or different, even when having the same index, and are each a hydrogen atom, a halogen atom, a heteroatom-containing C1-C40-hydrocarbon group, a C1-C40-hydrocarbon group, â€”N(R17)2, â€”P(R17)2, â€”SR17, â€”OR17, â€”Si(R17)3, â€”[N(R17)3]+ or â€”[P(R17)3]+ where R17 is as defined for R4, or R10 and R11 in each case together with the atoms connecting them form one or more rings, X is an integer from 0 to 18, M2 is silicon, germanium or tin, and R9 may also link two units of the formula I to one another, Ra together with the cyclopentadienyl ring to which it is bound forms one of the molecular fragments where the heteroatom functions X are identical or different and are NR&lgr;, PR&lgr;, N, O or S, the radicals R&ggr;, R&dgr;, R&egr;, R&zgr;l and R&lgr; are hydrogen or are as defined for R3, the radicals R&agr; are as defined for R3â€² and the radicals R&bgr; are as defined for R4â€².