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

Bryliakov, Konstantin P., Kravtsov, Evgenii A., Pennington, Dale A., Lancaster, Simon J., Bochmann, Manfred ORCID: https://orcid.org/0000-0001-7736-5428, 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:	24 Oct 2022 02:15
URI:	https://ueaeprints.uea.ac.uk/id/eprint/10517
DOI:	10.1021/om0505920

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