Aminoboranediyl-bridged zirconocenes: Highly active olefin polymerization catalysts

Authors
Ashe, AJ Fang, XG Kampf, JW
Citation
Aj. Ashe et al., Aminoboranediyl-bridged zirconocenes: Highly active olefin polymerization catalysts, ORGANOMETAL, 18(12), 1999, pp. 2288-2290
Citations number
41
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
02767333 → ACNP
Volume
18
Issue
12
Year of publication
1999
Pages
2288 - 2290
Database
ISI
SICI code
0276-7333(19990607)18:12<2288:AZHAOP>2.0.ZU;2-I
Abstract
Novel aminoboranediyl-bridged zirconocenes [i-Pr2NB(eta(5)-C5H4)(2)]ZrCl2 ( 8b) and [i-Pr2NB(eta(5)-1-C9H8)(2)]ZrCl2 (4b) have been prepared and struct urally characterized. When activated by excess methylaluminoxane, 4b and 8b form highly active catalysts for the polymerization of ethylene. The catal yst derived from 4b converts propylene to isotactic polypropylene.