Bis(carbene)pyridine complexes of Cr(III): exceptionally active catalysts for the oligomerization of ethylene |
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Authors: | McGuinness David S Gibson Vernon C Wass Duncan F Steed Jonathan W |
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Affiliation: | Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK. |
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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. |
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