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.