CRYSTAL AND MOLECULAR-STRUCTURE, AND INFRARED STUDY OF BIS(2,2'-BIPYRIDINE) [N-(TOLUENE-P-SULFONYL)GLYCINATO-NO] CADMIUM(II) COMPLEX AND RELATED-COMPOUNDS

A series of complexes of formula [M(II)(bpy)2(ArSO2-N-aminoacidato-NO)1.3H2O [bpy = 2,2'-bipyridine, M(II) = Zn(II), ArSO2 N-aminoacidato NO = N(toluene-p-sulfonyl)- and N(benzenesulfonyl)-glycinate NO dianion,hereafter abbreviated as tsgly-NO and bsgly-NO, respectively, M(II) = Cd(II), ArSO2-N-aminoacidato-NO = tsgly-NO] was separated and investigated by spectroscopic and X-ray methods. The crystal structure of [Cd(bpy)2(tsgly-NO)].3H2O was determined. The compound crystallizes in the monoclinic space group P2(1)/n, Z = 4, a = 15.427(4), b = 13.580(2), c = 15.546(4) angstrom, beta = 110.97(3), R = 0.041, R(w) = 0.043. The structure consists of monomeric, approximately octahedral [Cd(bpy)2(tsgly-NO)] units with a N5O donor atom set, which gives rise to three almost orthogonal five-membered chelate rings. The IR spectra suggest similar environments for all the complexes.