STRUCTURE OF 1,7-BIS(BENZIMIDAZOL-2-YL)-2,6-DITHIAHEPTANECOPPER(I) PERCHLORATE AT 233-K

[Cu(C19H20N4S2)]ClO4, M(r) = 531.52, monoclinic, C2/c, a = 14.166 (4), b = 17.571 (5), c = 9.942 (2) angstrom, beta = 118.08 (2)-degrees, V = 2183.3 angstrom 3, Z = 4, D(x) = 1.617 g cm-3, Cu K-alpha, lambda = 1.54056 angstrom, mu = 46.1 cm-1, F(000) = 1088, T = 233 K, the final R value is 0.053 for 1039 significant [I > 3-sigma(I)] reflections. The Cu(I) ion is only linearly coordinated by two pyridine N atoms of the benzimidazole groups of the BBDHP ligand [Cu-N = 1.908 (4) angstrom]. The thioether S atoms do not have significant bonding contacts with the copper ion [Cu-S = 2.876 (2) angstrom]. The cation and perchlorate anion are linked by a hydrogen bond.