C 24H24Cl2CuN16O8S16, triclinic, P1 (no. 2), a = 10.449(2) Å, b = 10.474(2) Å, c = 12.705(2) Å, a = 68.694(2)°, b = 76.439(2)°, g = 74.924(2)°, V = 1235.6 Å 3 , Z = 1, R gt(F) = 0.040, wRref(F 2 ) = 0.107, T = 291 K. Source of material The reaction of 2,2'-[1,2-ethanediyl-bis(thio)]bis(1,3,4thiadiazole) (0.2 mmol) with Cu(ClO 4)2 (0.1 mmol) in MeOH (10 ml) for a few minutes afforded a light blue solid, which was filtered, washed with acetone, and dried on air. The single crystals suitable for

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... ray analysis were obtained by slow diffusion of Et 2O into the acetonitrile solution of the solid.