title: Bis(carbene)pyridine complexes of Cr(III): exceptionally active catalysts for the oligomerization of ethylene.
abstract: Pincer-heterocyclic carbene complexes of Cr(III), of the form [2,6-(1-alkylimidazol-2-ylidene)pyridine]CrCl3, have been prepared and evaluated as catalysts for the oligomerization of ethylene to alpha-olefins. In combination with methylaluminoxane cocatalyst, exceptionally high activities are obtained, ranging up to ca. 40 000 g mmol-1 bar-1 h-1.
authors.affiliation: Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK.
authors.forename: David S
authors.initials: DS
authors.lastname: McGuinness
authors.forename: Vernon C
authors.initials: VC
authors.lastname: Gibson
authors.forename: Duncan F
authors.initials: DF
authors.lastname: Wass
authors.forename: Jonathan W
authors.initials: JW
authors.lastname: Steed