Patent ID: 7098356

Claim:
A metal compound corresponding to the formula: CpM(Z) z (X) x (T) t (X′) x (I), Cp is a substituted inden-1-yl or partially hydrogenated derivative thereof substituted at least at the 2-position thereof with a C 4-30 alkyl, aralkyl, or trihydrocarbylsilylhydrocarbyl group, or a Group 15 or 16 heteroatom containing group corresponding to the formula: wherein R 7 is hydrogen or C 1-10 alkyl, said group containing 2 or 3 non-hydrogen substituents on at least one β-position thereof; M is a metal selected from Groups 3–10 or the Lanthanide series of the Periodic Table of the Elements; Z is a divalent moiety of the formula -Z′Y— joining Cp and M, wherein, Y is —O—, —S—, —NR 5 —, —PR 5 , —NR 5 2 , or —PR 5 2 ; Z′ is SiR 6 2 , CR 6 2 , SiR 6 2 SiR 6 2 , CR 6 2 CR 6 2 , CR 6 ═CR 6 , CR 6 2 SiR 6 2 , BR 6 , or GeR 6 2 , bound at the 1-position of Cp; R 5 , independently each occurrence, is hydrocarbyl, trihydrocarbylsilyl, or trihydrocarbylsilylhydrocarbyl, said R 5 having up to 20 atoms other than hydrogen, and optionally two R 5 groups or R 5 together with Y form a ring system; R 6 , independently each occurrence, is hydrogen, or a member selected from hydrocarbyl, hydrocarbyloxy, silyl, halogenated alkyl, halogenated aryl, —NR 5 2 , and combinations thereof, said R 6 having up to 30 non-hydrogen atoms, and optionally, two R 6 groups form a ring system; X is hydrogen or a monovalent anionic ligand group having up to 60 atoms not counting hydrogen; T independently each occurrence is a neutral ligating compound having up to 20 atoms, other than hydrogen, and optionally T and X are bonded together; X′ is a divalent anionic ligand group having up to 60 atoms other than hydrogen; z is 0, 1 or2; x is 0, 1, 2, or3; t is a number from 0 to 2, and x′ is 0 or 1.