Phosphorus-, sulfur-, and nitrogen-containing ligands in complexes with copper(I) halides

Reactions between mixed phosphorous acid esters containing P-N, P-S and P-N, P-O bonds with Cu(I) halides yield a series of new P,S,N,O-containing metal complexes. Phosphoroamidothioite complexes are unstable and easily disproportionate in the metal coordination sphere to give stable compounds containing symmetrical phosphorotrithioite and phosphorous triamide ligands. The structure of the compound (EtS)(2)PNE2 . CuBr was studied by X-ray diffraction. In this complex monodentate coordination via phosphorus and bidentate coordination via phosphorus and sulfur are observed simultaneously.