Key intermediates in metallocene-and post-metallocene-catalyzed polymerization

Talsi, E. P., Bryliakov, K. P., Semikolenova, N. V., Zakharov, V. A. and Bochmann, M. (2007) Key intermediates in metallocene-and post-metallocene-catalyzed polymerization. Kinetics and Catalysis, 48 (4). pp. 490-504. ISSN 0023-1584

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Abstract

The structures of intermediates formed upon the activation by methylaluminoxane (MAO) of a wide range of metallocene and post-metallocene catalysts of olefin polymerization were studied by C-13, H-1, and F-19 NMR. For all metallocenes considered (L2ZrCl2 and L2TiCl2), under conditions similar to real polymerization conditions (Al/Zr > 200), two types of intermediates were identified in the reaction solution, namely, heterodinuclear ion pairs [L-2 M(mu-Me)(2)AlMe2](+)[Me-MAO](-) (III) and zwitterionic intermediates L-2 MMe+

Item Type: Article
Additional Information: 7th Russian Conference on Mechanisms of Catalytic Reactions JUL 02-08, 2006 St Petersburg, RUSSIA
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Rachel Smith
Date Deposited: 16 Jun 2011 13:41
Last Modified: 21 Apr 2020 19:33
URI: https://ueaeprints.uea.ac.uk/id/eprint/32761
DOI: 10.1134/s0023158407040052

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