Four novel mononuclear and polynuclear Cu(I) thiosaccharinates with triphenylphosphane and bis(diphenylposphino)methane. Synthesis and structural study of Cu4(tsac)4(PPh3)3, Cu(tsac)(PPh3)2, Cu4(tsac)4(dppm)2, and Cu2(tsac)2(dppm)2

Copper(I) thiosaccharinate in combination with triphenylphosphane and bis(diphenylphosphino)methane (dppm) produces a rich coordination chemistry. New uncommon mono-, di-, and tetra-nuclear complexes have been prepared and structurally characterized. Three different coordination forms of the thiosaccharinate anion are present in the new substances. The thioamidate acts as a two, four or six-electron donating ligand through its exocyclic S and endocyclic N atoms.