Patent ID: 7307177
Filing Date: 2007-12-11
Classification: C07F,C08F

Abstract:
1. A metallocene complex represented by the formula where each occurrence of C each of the five R substituents on the cyclopentadienyl group is independently selected from the group consisting of hydrogen, C n is 1 or 2; M is a metal of valence m from Group 4 of the Periodic Table of Elements, k is equal to m minus n and is 2 or 3 where m is the valence of M; and each X substituent is a univalent anionic ligand, or two X substituents are joined and bound to the metal atom to form a metallocycle ring, or two X substituents are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand, provided that: (1) at least one R substituent on the cyclopentadienyl group is SiR′