SILICON-CARBON BRIDGED BIS(FLUORENYL) AND BIS(OCTAHYDROFLUORENYL) ANSA-ZIRCONOCENES - SYNTHESIS, CHARACTERIZATION AND ETHYLENE POLYMERIZATION CATALYSIS

Authors
LEINO R LUTTIKHEDDE HJG LEHTONEN A WILEN CE NASMAN JH
Citation
R. Leino et al., SILICON-CARBON BRIDGED BIS(FLUORENYL) AND BIS(OCTAHYDROFLUORENYL) ANSA-ZIRCONOCENES - SYNTHESIS, CHARACTERIZATION AND ETHYLENE POLYMERIZATION CATALYSIS, Journal of organometallic chemistry, 546, 1997, pp. 219-224
Citations number
27
Journal title
Journal of organometallic chemistry → ACNP
ISSN journal
0022328X
Volume
546
Year of publication
1997
Pages
219 - 224
Database
ISI
SICI code
0022-328X(1997)546:<219:SBBABA>2.0.ZU;2-V
Abstract
The synthesis and characterization of two new silicon-carbon bridged a nsa-bis(fluorenyl) and ansa-bis(octahydrofluorenyl) zirconocene comple xes, (Flu-CH2-SiMe2-Flu)ZrCl2 (3) and (FluH(8)-CH2-SiMe2-FluH(8))ZrCl2 (4) is reported. Complex 3, in combination with methylaluminoxane (MA O), forms an active catalyst system for homogeneous polymerization of ethylene. The molecular structure of 4 reveals a large Centroid-Zr-Cen troid angle (131.9 degrees) and an unusually small Cl-Zr-Cl angle (93. 2 degrees). The Zr-C bond distances range from 2.48 to 2.64 Angstrom. (C) 1997 Elsevier Science S.A.