Crystal structures and polymerization catalytic properties of 1,1,2,2-tetramethyldisilane-bis(3-t-butyl-eta(5)-cyclopentadienyl) titanium and zirconium dichlorides

Authors
Tian, GG Wang, BQ Xu, SS Zhang, YQ Zhou, XZ
Citation
Gg. Tian et al., Crystal structures and polymerization catalytic properties of 1,1,2,2-tetramethyldisilane-bis(3-t-butyl-eta(5)-cyclopentadienyl) titanium and zirconium dichlorides, J ORGMET CH, 579(1-2), 1999, pp. 24-29
Citations number
14
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF ORGANOMETALLIC CHEMISTRY
ISSN journal
0022328X → ACNP
Volume
579
Issue
1-2
Year of publication
1999
Pages
24 - 29
Database
ISI
SICI code
0022-328X(19990505)579:1-2<24:CSAPCP>2.0.ZU;2-0
Abstract
The title complexes Me4Si2(1-C5H3-3-Bu-t)(2)MCl2 (M = Ti, 1; M = Zr, 2) hav e been prepared by reaction of Li2Me4Si2(C5H3-3-Bu-t)(2) with MCl4. 2THF in refluxing THF. Rac/meso ratio of about 2/3 was obtained for the titanocene complex 1. But for the zirconocene 2, only meso isomer was obtained. The c rystal structures of meso-1 and meso-2 were determined. Their catalytic pro perties for ethylene polymerization have also been studied with MAO as a co catalyst. (C) 1999 Elsevier Science S.A. All rights reserved.