Bis[μ(2)-bis-(diphenyl-phosphino)methane]bis-(μ(2)-ethane-1,2-dithiol-ato)-μ(4)-sulfido-μ(2)-sulfido-disulfidodimolybdenum(V)disilver(I) dimethyl-formamide tris-olvate.

Treatment of [Et(4)N](2)[(edt)(2)Mo(2)S(2)(μ-S)(2)] (edt = ethane-dithio-l-ate) with two equivalents of Ag(CH(3)CN)(4)ClO(4) in the presence of bis-(diphenyl-phosphino)methane (dppm) ligand gives rise to the title tetra-nuclear cluster, [Ag(2)Mo(2)(C(2)H(4)S(2))(2)S(4)(C(25)H(22)P(2))(2)]·3C(3)H(7)NO. The complex mol-ecule and one of the dimethyl-formamide (DMF) solvent mol-ecules occupy special positions on a mirror plane. The mol-ecular structure of the complex may be visualized as being built of [Mo(2)S(2)(μ-S)(2)(edt)(2)](2-) dianions and [Ag(2)(dppm)(2)](2+) dications connected by two Ag-μ-S(edt) and two Ag-μ(4)-S bonds.