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