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Bis(carbene)pyridine Complexes of the Early to Middle Transition Metals: Survey of Ethylene Oligomerization and Polymerization Capability

Citation

McGuinness, DS and Gibson, VC and Steed, JW, Bis(carbene)pyridine Complexes of the Early to Middle Transition Metals: Survey of Ethylene Oligomerization and Polymerization Capability, Organometallics, 23, (26) pp. 6288-6292. ISSN 0276-7333 (2004) [Refereed Article]

DOI: doi:10.1021/om049246t

Abstract

Bis(carbene)pyridines of the type 2,6-bis(1-(alkyl/aryl)imidazol-2-ylidene) pyridine have been complexed to Ti, V, Cr, Fe, and Co and single-crystal X-ray structures obtained for two of the complexes (M = Cr, Fe). The structures confirm the tight chelate bite angles (ca. 76-79°) enforced by this ligand. All complexes have been evaluated as catalysts for ethylene oligomerization and polymerization in combination with a variety of cocatalysts. While Ti and V complexes of this ligand give rise to highly active ethylene polymerization catalysts, Cr complexes produce exceptionally active Schulz-Flory oligomerization catalysts in combination with MAO. In contrast, complexes of Fe and Co are inactive, and possible reasons for this are suggested.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Other Chemical Sciences
Research Field:Industrial Chemistry
Objective Division:Manufacturing
Objective Group:Industrial Chemicals and Related Products
Objective Field:Plastics in Primary Forms
Author:McGuinness, DS (Dr David McGuinness)
ID Code:46828
Year Published:2004
Web of Science® Times Cited:164
Deposited By:Chemistry
Deposited On:2007-11-08
Last Modified:2007-11-08
Downloads:0

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