Nuclear magnetic resonance studies on metal complexes. Part I. Dimethylphenylphosphine complexes of platinum(II) and palladium(II)

Abstract

New complexes of platinum(II) and palladium(II) with dimethylphenylphosphine are described. 1H Nuclear magnetic resonance data for these complexes, and for simple derivatives of dimethylphenylphosphine, e.g., the oxide and sulphide, are given. The phenomenon of “virtual” coupling is discussed briefly and used to study cis/trans isomerism in these complexes. trans-Di-iodobis(dimethylphenylphosphine)palladium(II) is unusual in having a red polymorph in which the palladium is co-ordinated to three iodine atoms and possibly weakly co-ordinated to β-hydrogen atoms on the phenyl rings.