Tetra-ethyl-ammonium dicyanidobis(ethane-1,2-dithiol-ato)tetra-μ(3)-sulfido-dimolybdenum(V)dicopper(I).

The title compound, (C(8)H(20)N)(2)[Cu(2)Mo(2)(C(2)H(4)S(2))(2)(CN)(2)S(4)], is a sulfide-bridged tetranuclear complex in which the complex anion comprises one [(edt)(2)Mo(2)S(2)(μ-S)(2)](2-) unit (edt = ethanedithiol-ate) and two CuCN units joined through six Cu-μ(3)-S bonds, thus forming a cubane-like [Mo(2)S(4)Cu(2)] core. There are two independent cation-anion complex entities in the asymmetric unit. Bond distances are normal for this type of complex [ranges: Mo-S = 2.193 (2)-2.390 (2); Cu-S = 2.266 (2)-2.470 (2); Cu-C = 1.899 (7)-1.911 (9) Å]. One of the thiol-ato C atoms is disordered over two sites in a 0.52 (3):0.48 (3) ratio.