TRITHIOOXALATE AS VARYING BRIDGING LIGAND - CRYSTAL AND MOLECULAR-STRUCTURE OF ITHIOOXALATO-BIS[BIS(TRIPHENYLPHOSPHANE)COPPER(I)]

Due to its design, trithiooxalat (trto) as a multidentate, chalcogen-r ich ligand allows different coordination possibilities. In contrast to the corresponding dinuclear silver complex [(Ph(3)P)(2)Ag](2)(trto), which is side-on(S,S')/end-on(S',S '') coordinated, the title complex is exclusively side-on (S,S' and S '',O) coordinated involving the oxy gen donor atom. [(Ph(3)P)(2)Cu](2)(trto) crystallizes in the triclinic space group <P(1)over bar> (No.2) with a = 10.195(2), b = 13.090(3), c = 13.450(3) Angstrom, alpha = 116.10(2)degrees, beta = 90.10(2)degre es, gamma = 101.49(2)degrees, and Z = 1. The bridging ligand with its nonsymmetrical donor atom set is disordered around the centre of symme try (inversion centre).