Novel olefin nickel(0) complexes of the methyl derivatives of methylenecyclopropane and cyclopropene

Add time:09/10/2019    Source:sciencedirect.com

The interaction of phosphine nickel complexes Ni(PPh3)3 and Ni(PPh3)2(η2-C2H4) with methyl derivatives of methylenecyclopropane and cyclopropene has been studied. The novel olefin complexes: (η2-2,2-dimethyl-1-methylenecyclopropane)bis(triphenylphosphine)nickel, (η2-1,3,3-trimethylcyclopropene)bis(triphenylphosphine)nickel and (η2-tetramethylcyclopropene)bis(triphenylphosphine)nickel have been prepared. The structure of the compounds obtained is discussed on the basis of the 1H and 31P{1H} NMR spectra. Comparative studies of the reactivities of the resulting complexes in the substitution reactions of η2-olefin ligands are described.

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