CRYSTAL AND MOLECULAR-STRUCTURE OF AQUA(2,2'-BIPYRIDINE)BIS(BETAINE)COPPER(II) PERCHLORATE MONOHYDRATE

A new monomeric copper(II) complex with 2,2'-bipyridine (bpy) and beta ine (bet), [Cu(bpy)(bet)(2)(H2O)](ClO4)(2) . H2O, has been prepared an d characterized by X-ray crystallography. The complex crystallizes in the triclinic space group P-1 with a = 8.859(2), b = 11.191(2), c = 14 .850(3) Angstrom, alpha = 91.41(1), beta = 97.19(1), gamma = 91.97(1)d egrees, V = 1459.2(7) Angstrom(3), and Z = 2. The structure comprises discrete cations [Cu(bpy)(bet)(2)(H2O)](2+) in which the metal atom is coordinated in a distorted square-pyramidal environment by two oxygen atoms from a pair of monodentate carboxylato ligands [Cu-O = 1.950(2) Angstrom] acid two nitrogen atoms of a bidentate bpy ligand [Cu-N = 1 .997(3)-2.005(3) Angstrom] on the basal plane, and one aqua [Cu-O = 2. 267(3) Angstrom] ligand at the apical position.