Complexes métalliques de l'acide rubéanique. I. Synthèse, structure moléculaire et cristalline d'un rubéanate de cuivre(I): CuCl(C2N2S2H4)1,5(H2O)0,45

Abstract

Abstract CuCl(C2N2S2H4)1.5(H2O)0.45 crystallizes in the orthorhombic system, space group Ccca. The cell parameters are: a = 14.528(3) Å, b = 22.686(4) Å, c = 13.503(3) Å. The crystal structure has been determined using X-ray single crystal techniques and refined by full-matrix least-squares calculations to R = 0.051. The structure is polymeric and consists in double helical chains … Cu SC(NH2)C(NH2)S Cu …, wrapped round the [0 1/4 z] axis. In these chains, the rubeanic acid acts as a bidentate ligand through the two S atoms. The connections between the chains are ensured by a third ligand, showing the same coordination scheme. The metal atom Cu(I) is surrounded by three S atoms and one Cl atom, achieving a near perfect tetrahedron.