The structure of 1 determined by X-ray structural analyses indicated that bis(1-methylimidazol-2-yl)methylthiolate acted as a bidentate monoanionic κ2-[N,S] chelating ligand. Reaction of 1 with W(CO)5THF yielded heterobimetallic complex Ph2ClSnSCH(min)2W(CO)5 (2), while similar reaction of 4 with W(CO)5THF resulted in the decomposition of 4 to give pyrazole derivative W(CO)5(pzH). The structure of