The 31P and 13C n.m.r. spectra of the adducts obtained from dioxobis(triphenylphosphine)platinum and tetracyanoethylene or 1,1-dicyano-2-methylpropene, [[graphic omitted]}(PPh3)2][R = CN (1a) and Me (1b)] respectively, have been examined. An X-ray structural study of the adduct (1b) shows a slightly distorted square-planar complex with the metallacyclic ring in a twist conformation.
G. Read, M. Urgelles, A. M. R. Galas and M. B. Hursthouse, J. Chem. Soc., Dalton Trans., 1983, 911 DOI: 10.1039/DT9830000911
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