Synthesis and structure of tetranuclear mu(4)-S copper(I) complex with bis(diphenylphosphino)methane

Tetranuclear mu(4)-S copper(I) complex [Cu-4(S)(dppm)(4)] (PF6)(2). CH2Cl2 was obtained by reaction of [Cu(dppm) (NO3)](2)[dppm = bis(diphenylphosphin o) methane] with carbon disulfide. The title complex was characterized by I R, XPS, H-1 NMR and emission spectroscopy. X-ray data showed that the dppm coordinates served as a bidentate bridging ligand to the mu(4)-S Cu(I) atom s in a tetranuclear copper(I) complex, and PF6- was the counter ion in the formation of tetranuclear copper(I) complex. The copper(I) ions have a trig onal planar geometry with a P2S donor set. The crystalline data are: C101H9 0. Cl2Cu4F12P10S, M-r = 2198.69, monoclinic, space group C2/c, a = 2.847(1) nm, b = 1.6164(3) nm, c = 2.424(2) nm, beta = 113.42(4)degrees, V = 10.234 nm(3), D-c = 1.427g.cm(-3), Z = 4, F(000) = 4480, mu(MoK alpha) = 11.16(cm( -1)), R = 0.078.