摘要 |
Metal complexes useful as olefin polymerization catalysts corresponding to the formula: <IMAGE> or a dimer, solvated adduct, chelated derivative or mixture thereof, wherein: Q is a cyclic group or Y*, that is bound to M by means of a delocalized pi -bond, said group containing up to 50 nonhydrogen atoms; M is a metal of Group 3, 4 or the Lanthanide series of the Periodic Table of the Elements; Z is a covalently bound, divalent substituent of up to 50 non-hydrogen atoms having the formula, -(ER2)m-, wherein E independently each occurrence is carbon, silicon or germanium, R independently each occurrence is selected from the group consisting of hydrocarbyl, hydrocarbyloxy, silyl, and germyl of up to 20 atoms other than hydrogen, and m is an integer from 1 to 3; Y* is an allyl or a hydrocarbyl-, silyl- or germyl-substituted allyl group containing up to 20 nonhydrogen atoms bonded to Z and bonded via an eta 3- pi bond to M; L is a neutral confugated diene ligand having up to 20 non-hydrogen atoms; X'' independently each occurrence is a monovalent, anionic moiety selected from hydride, halo, hydrocarbyl, silyl, germyl, hydrocarbyloxy, amide, siloxy, halohydrocarbyl, halosilyl, silylhydrocarbyl, and aminohydrocarbyl having up to 20 non-hydrogen atoms, or two X'' groups together form a divalent hydrocarbadiyl group; n is a number from 0 to 3; and p is an inteaer from 0 to 2. |