This invention relates to an organothiosulfonato Au(I) complex having the
formula
[A--SO.sub.2 S--Au--SSO.sub.2 --A].sub.n.sup.- M.sup.+n
wherein
M is a cationic counter ion;
A is a substituted or unsubstituted organic group;
and n is 1 to 4; and wherein the compound is symmetrical. It further
relates to the synthesis of said compounds.