Copper(I) and mercury(II) halide complexes of 1,2-bis(diphenylthioylphosphino)hydrazine

The ligand, 1,2-bis(diphenylthioylphosphino)hydrazine, forms dimetallic complexes with copper(I) halides, monomeric complexes with mercury(II) chloride and bromide and an unusual tetrametallic complex with mercury(II) iodide.