Experimental evidence for large ring metallacycle intermediates in polyethylene chain growth using homogeneous chromium catalysts |
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Authors: | Tomov Atanas K Chirinos Juan J Jones David J Long Richard J Gibson Vernon C |
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Affiliation: | Imperial College London, South Kensington Campus, London SW7 2AY, UK. |
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Abstract: | Deuterio-ethylene labeling studies on two homogeneous chromium ethylene oligomerization catalysts show that chain propagation proceeds via metallacyclic intermediates; reactions performed in the presence of 1-nonene show no incorporation of the higher olefin, strongly implicating the involvement of large ring metallacycles. |
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