Synthesis and reactivity of allyl nickel(II) N‐heterocyclic carbene enolate complexes |
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| Authors: | Stefan Benson Bridgett Payne Robert M. Waymouth |
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| Affiliation: | 1. Department of Chemistry, Stanford University, Stanford, California 94305;2. Department of Chemistry, Stanford University, Stanford, California 94305Department of Chemistry, Stanford University, Stanford, California 94305 |
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| Abstract: | Two new N‐heterocyclic carbene enolate nickel(II) allyl complexes have been prepared and their activity towards ethylene polymerization was investigated. It was found that in the presence of diethyl zinc, the carbene enolate complex bearing a nitro substituent produces highly linear polyethylene of modest molecular weight and high polydispersity. The influence of the reaction parameters on catalytic activity and the characteristics of the resulting polymer were investigated through systematic variation of the time, temperature, and diethyl zinc concentration. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45:3637–3647, 2007 |
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| Keywords: | catalysts metal‐organic catalysts/organometallic catalysts neutral nickel catalysts polyolefins |
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