1,1-Dithio-oxalat als Brückenligand in Zwei- und Dreikernkomplexen

1,1-Dithio-oxalate as Bridging Ligand in Bi- and Trinuclear Complexes 1,1-Dithio-oxalate (i-dto), a four-dentate chalcogenrich ligand, possesses the unique constitution of C? C coupled CO₂ and CS₂. Due to its ambident behaviour i-dto forms mononuclear complexes and defined homo- and heterobimetallic bi- and trinuclear complexes. Obviously as a combined result of the symmetry and the electron distribution the ligand acts preferably bridging. The formation of coordination polymers can be prevented using coordinatively halfside-saturated species ?(Ph₃P)₂M⁺”? (M = Cu, Ag). From EPR investigations of a trinuclear CuCu¹¹ complex we could get information about the coordination geometry and the electron distribution.