title: A mixed-valence CuII/CuI anion-cation complex: bis[mu-5-sulfosalicylato(3-)]bis[(di-2-pyridylamine)copper(II)] bis[bis(di-2-pyridylamine)copper(I)] dihydrate.
abstract: The title compound, [CuII(2)(C7H3O6S)2(C10H9N3)2][CuI(C10H9N3)2]2.2H2O, consists of anionic CuII moieties, cationic CuI species and uncoordinated water molecules. The anionic dimeric unit consists of one crystallographically independent fully deprotonated 5-sulfosalicylate (2-oxido-5-sulfonatobenzoate) anion, a di-2-pyridylamine group and a CuII atom. Each CuII atom is five-coordinate within a square-pyramidal geometry. The anion lies on a special position of -1 site symmetry. In the cationic monomer, the CuI atom adopts tetrahedral geometry. The cations and anions are connected by O-H...O and N-H...O hydrogen bonds.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou 310007, People's Republic of China.
authors.forename: Sai-Rong
authors.initials: SR
authors.lastname: Fan
authors.forename: Guo-Qiang
authors.initials: GQ
authors.lastname: Cai
authors.forename: Long-Guan
authors.initials: LG
authors.lastname: Zhu
authors.forename: Hong-Ping
authors.initials: HP
authors.lastname: Xiao