1,2-Dithiolate complexes of antimony and bismuth

Abstract

The syntheses of dicyanoethylene-1,2-dithiolate (‘maleonitriledithiolate’ mnt) and toluene-3,4-dithiolate (tdt) complexes of antimony(III) and bismuth(III) are described. Isolated were the series of complexes, [Sb(mnt)2]–, [Sb2(tdt)3]°, [Bi2(mnt)2X4]2–, [Bi2(mnt)3X2]2–, [Bi2(mnt)5]4– and [Bi2(tdt)3]°(X = Cl, Br, I). The bismuth-mnt complexes are considered to be dinuclear with respect to the metal and proposed for them are structures which have the two bismuth atoms bridged by two dithiolate ligands.