Neue Gemischtligandenkomplexe mit Perthiocarboxylaten

New Mixed Ligand Complexes with Perthio Carboxylates Solutions of O-methyl-1,1-dithiooxalate (i-dtoMe) and metal(II)-chlorides (Ni^II, Pd^II) in the molar ratio 2:1 react with equimolar amounts of homonuclear bischelates of other 1,1- and 1,2-dithio-compounds L (L = i-mnt, Etxan, dto) to mixed ligand complexes M(ptoMe)L with spontaneous convertion of the 1,1-dithiooxalate into the corresponding perthio ligand (ptoMe) by sulfur insertion. Tetraphenylphosphonium-(1,1-dicyanoethene-2,2-dithiolato)(O-methyl-1,1 -perthio-oxalato)niccolat(II), Ph₄PNi(i-mnt)(ptoMe)], crystallizes in the monoclinic space group P2₁/n with a = 11.019(2) Å, b = 13.648(3) Å, c = 20.882(3) Å, β = 92.565(7)°. The formation of the perthio ligand is confirmed by ¹³C-NMR.