Al-, Nb-, and Ta-Based Perfluoroaryloxide Anions as Cocatalysts for Metallocene-Mediated Ziegler−Natta Olefin Polymerization
摘要:
Perfluoroaryloxide salts of the formula Ph3C+-Al(OC6F5)(4)(-) and Ph3C+M(OC6F5)(6)(-) (M = Nb, Ta) have been synthesized and characterized. In combination with sterically encumbered zirconocene dimethyl complexes, they yield active ethylene polymerization catalysts.