ansa-Metallocene derivatives XXXII. Zirconocene complexes with a spirosilane bridge: syntheses, crystal structures and properties as olefin polymerization catalysts

…, U Rief, MH Prosenc, R Kirsten, HH Brintzinger

Index: Mansel, Stefan; Rief, Ursula; Prosenc, Marc-Heinrich; Kirsten, Robin; Brintzinger, Hans-Herbert Journal of Organometallic Chemistry, 1996 , vol. 512, # 1-2 p. 225 - 236

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Citation Number: 31

Abstract

Chiral ansa-zirconocene complexes with a trimethylene link between the Si bridge atom and an α-position of each C5 ring ligand were prepared; two representatives, with i-propyl and t- butyl groups as β-substituents, were structurally characterized. The properties of these complexes with respect to MAO-activated propene polymerization were studied in comparison with those of their Me2Si-bridged analogs. The t-butyl-substituted spirosilane ...