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First Cr(III)−SNS Complexes and Their Use as Highly Efficient Catalysts for the Trimerization of Ethylene to 1-Hexene

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journal contribution
posted on 15.04.2003 by David S. McGuinness, Peter Wasserscheid, Wilhelm Keim, David Morgan, John T. Dixon, Annette Bollmann, Hulisani Maumela, Fiona Hess, Ulli Englert
Cr(III) complexes of tridentate SNS ligands have been prepared and evaluated as catalysts for ethylene trimerization, with several giving very high activity and excellent selectivity toward 1-hexene when activated with methylaluminoxane. The new complexes illustrate the potential of sulfur-based ligands on early transition metals for catalysis.