Active Intermediates in Ethylene Polymerization over Titanium Bis(phenoxyimine) Catalysts

Bryliakov, Konstantin P., Kravtsov, Evgenii A., Pennington, Dale A., Lancaster, Simon J., Bochmann, Manfred, Brintzinger, Hans H. and Talsi, Evgenii P. (2005) Active Intermediates in Ethylene Polymerization over Titanium Bis(phenoxyimine) Catalysts. Organometallics, 24 (23). pp. 5660-5664.

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Abstract

Reactive intermediates in living olefin polymerization over homogeneous catalysts based on bis[N-(3-tert-butylsalicylidene)-2,3,4,5,6-pentafluoroanilinato]titanium(IV) dichloride (L2TiCl2) have been studied. Outer sphere ion pairs [L2TiMe(S)]+[Me-MAO]- and [L2TiMe(S)]+[B(C6F5)4]- (S = solvent molecule), formed by activation of L2TiCl2 with MAO or with AlMe3/[CPh3]+[B(C6F5)4]-, and reactions of these ion pairs with ethene to afford chain-propagating species [L2TiP]+[Me-MAO]- and [L2TiP]+[B(C6F5)4]- (P = growing polymeryl chain) have been characterized by 1H, 13C, and 19F NMR spectroscopy.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Rachel Smith
Date Deposited: 02 Nov 2010 17:48
Last Modified: 05 Apr 2019 11:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/10517
DOI: 10.1021/om0505920

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