Patent ID: 7074865

Claim:
A metal complex corresponding to the formula, CpM(X) x (L) t (Xâ€²) xâ€² (I), where Cp is a 1,2-azaborolyl anionic ligand, corresponding to the formula: wherein, R A , independently each occurrence, is a group of from 1 to 40 atoms, not counting hydrogen, selected from the group consisting of hydrocarbyl, trihydrocarbylsilylhydrocarbyl, dihydrocarbylamino, and hydrocarbyleneamino, and optionally two R A groups may be joined together thereby forming a fused multi-ring ligand group; R B , independently each occurrence, is selected from the group consisting of hydrogen, Zâ€²Y and R A , with the proviso that one R B is Zâ€²Y, said Cp also being bound to M; M is a metal selected from Groups 3â€“10 or the Lanthanide series of the Periodic Table of the Elements; Zâ€²Y is a divalent moiety with Zâ€² bonded to Cp and Y covalently or coordinate covalently bonded to M, wherein, Zâ€² is SiR 6 2 , CR 6 2 , SiR 6 2 SiR 6 2 , CR 6 2 CR 6 2 , CR 6 â•CR 6 , CR 6 2 SiR 6 2 , BR 6 , BR 6 Lâ€³, or GeR 6 2 ; Y is â€”Oâ€”, â€”Sâ€”, â€”NR 5 â€”, â€”PR 5 â€”; â€”NR 5 2 , or â€”PR 5 2 ; 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, â€”NR 5 2 , and combinations thereof, said R 6 having up to 20 non-hydrogen atoms, and optionally, two R 6 groups form a ring system; Lâ€³ is a monodentate or polydentate Lewis base optionally bonded to R 6 ; X is hydrogen or a monovalent anionic ligand group having up to 60 atoms not counting hydrogen; L independently each occurrence is a neutral ligating compound having up to 20 atoms, other than hydrogen, and optionally L and X are bonded together; Xâ€² is a divalent anionic ligand group having up to 60 atoms other than hydrogen; x is 0, 1, 2, or 3; t is a number from 0 to 2, and xâ€² is 0 or 1.