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Ethylene polymerisation and oligomerisation with arene-substituted phenoxy-imine complexes of titanium: investigation of multi-mechanism catalytic behaviour
journal contribution
posted on 2023-05-17, 21:30 authored by Suttil, JA, McGuinness, DS, Michael GardinerMichael Gardiner, Evans, SJA 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.
Funding
Sasol Technology Pty Ltd
History
Publication title
Dalton TransactionsVolume
42Issue
12Pagination
4185-4196ISSN
1477-9226Department/School
School of Natural SciencesPublisher
RSC PublicationsPlace of publication
Thomas Graham House, Science Park, Milton Rd, Cambridge, England, Cambs, Cb4 0WfRights statement
Copyright 2013 Dalton TransactionsRepository Status
- Restricted