Metallocenes containing aryl-substituted indenyl ligands and their use as catalysts

A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula Ra—CH═CH—Rb, in which Ra and Rb are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms, or Ra and Rb, together with the atoms connecting them can form one or more rings, and at a temperature of from −60 to 200° C., at a pressure of 0.5 to 100 bar, in solution, in suspension or in the gas phase, in the presence of a catalyst formed from a metallocene as transition-metal compound and a cocatalyst, wherein the metallocene is a compound of the formula I

• in which
• M1 is a metal from group IVb, Vb or VIb of the Periodic Table,
• R1 and R2 are identical or different and are a hydrogen atom, a C1-C10-alkyl group, a C1-C10-alkoxy group a C6-C10-aryl group, a C6-C10-aryloxy group, a C2-C10-alkenyl group, a C7-C40-arylalkyl group, a C7-C40-alkylaryl group, a C8-C40-arylalkenyl group, an OH group or a halogen atom,
• the radicals R3 are identical or different and are a hydrogen atom, a halogen atom, a C1-C10-alkyl group, which may be halogenated, a C6-C10-aryl group, an —NR162, —SR16, —OSiR163, —SiR163 or —PR162 radical, in which R16 is a halogen atom, a C1-C10-alkyl group or a C6-C10-aryl group,
• R4 to R12 are identical or different and are as defined for R3, or adjacent radicals R4 to R 12, together with the atoms connecting them, form one or more aromatic or aliphatic rings, or the radicals R5 and R8 or R12, together with the atoms connecting them, form an aromatic or aliphatic ring,
• R13 is
• ═BR14, ═AIR14, —Ge—, —O—, —S—, ═SO, ═SO2, ═NR14, ═CO, ═PR14 or ═P(O) R14, where R14 and R15 are identical or different and are a hydrogen atom, a halogen atom, a group, a C1-C10-alkyl group, a C1-C10-fluoroalkyl group, a C1-C10-alkoxy group, a C6-C10-aryl group, a C6-C10-fluoroacyl group, a C6-C10-aryloxy group, a C2-C10-alkenyl group, a C7-C40-arylalkyl group, a C7-C40-alkylaryl group or a C8-C40-arylalkenyl group, or R14 and R15, in each case together with atoms connecting them, form one or more rings, and
• M2 is silicon, germanium or tin.