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Ethylene polymerisation and oligomerisation with arene-substituted phenoxy-imine complexes of titanium: investigation of multi-mechanism catalytic behaviour

Citation

Suttil, JA and McGuinness, DS and Gardiner, MG and Evans, SJ, Ethylene polymerisation and oligomerisation with arene-substituted phenoxy-imine complexes of titanium: investigation of multi-mechanism catalytic behaviour, Dalton Transactions, 42, (12) pp. 4185-4196. ISSN 1477-9226 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Dalton Transactions

DOI: doi:10.1039/c3dt32183e

Abstract

A range of unsubstituted (1,2) and 6-substituted (3-5) ortho-phenoxy-imine ligands have been prepared and converted to their silyl ether derivatives (6-10). Reaction of silyl ethers with TiCl4(thf)2 in the case of the unsubstituted species yields bis-ligated complexes while the substituted species react cleanly to yield complexes of the form [Ti(O^NR)Cl3(thf)]. In most cases the complexes have been characterised by X-ray crystallography. Testing of the complexes for ethylene oligomerisation and polymerisation has been undertaken employing alkylaluminium co-catalysts (AlEt3, MAO). In all cases the predominant product formed is polyethylene however careful analysis of the liquid phase reveals a complex process by which 1-butene is most likely formed via Cossee mechanism while 1-hexene results from a metallacyclic process.

Item Details

Item Type:Refereed Article
Keywords:catalysis, titanium, oligomerisation
Research Division:Chemical Sciences
Research Group:Other Chemical Sciences
Research Field:Organometallic Chemistry
Objective Division:Manufacturing
Objective Group:Industrial Chemicals and Related Products
Objective Field:Organic Industrial Chemicals (excl. Resins, Rubber and Plastics)
Author:Suttil, JA (Mr James Suttil)
Author:McGuinness, DS (Dr David McGuinness)
Author:Gardiner, MG (Associate Professor Michael Gardiner)
ID Code:88316
Year Published:2013
Web of Science® Times Cited:8
Deposited By:Chemistry
Deposited On:2014-01-28
Last Modified:2016-12-19
Downloads:0

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