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A survey of pendant donor-functionalised (N,O) phosphine ligands for Cr-catalysed ethylene tri- and tetramerisation

Citation

Suttil, JA and Wasserscheid, P and McGuinness, DS and Gardiner, MG and Evans, SJ, A survey of pendant donor-functionalised (N,O) phosphine ligands for Cr-catalysed ethylene tri- and tetramerisation, Catalysis Science and Technology, 4, (8) pp. 2574-2588. ISSN 2044-4753 (2014) [Refereed Article]

Copyright Statement

Copyright 2014 The Royal Society of Chemistry

DOI: doi:10.1039/c4cy00457d

Abstract

In this study three classes of ligands are explored for ethylene tri-/tetramerisation in conjunction with chromium and both triethylaluminium (AlEt3) and methylaluminoxane (MAO) co-catalysts. Hydrazine based ligands containing an NH functionality [PN(NH)P], analogous to Rosenthal's previously reported PNPNH system, show selectivity towards 1-hexene and 1-octene formation in conjunction with AlEt3, and act as PNP tetramerisation analogues when MAO is employed. PNP ligands containing non-protic pendant donor moieties generally show poor activity and selectivity when AlEt3 is employed as an activator, however when MAO is used good activities and selectivities are achieved. n-Propylcyclopentane and 2-propenylcyclopentane, and higher homologues, are produced during catalysis when oxygen is the donor atom. The formation of such products is discussed with respect to the generation of methylenecyclopentane and methylcyclopentane by PNP based tetramerisation catalysts. Simple phosphine ligands containing OH functionalisation are also explored and it was shown that the catalyst selectivity is highly dependent on both the activator and structural features of the ligand employed.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Inorganic Chemistry
Research Field:Transition Metal Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Suttil, JA (Mr James Suttil)
Author:McGuinness, DS (Dr David McGuinness)
Author:Gardiner, MG (Associate Professor Michael Gardiner)
ID Code:93793
Year Published:2014
Web of Science® Times Cited:14
Deposited By:Chemistry
Deposited On:2014-08-18
Last Modified:2015-04-28
Downloads:0

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