Crystal and molecular structure of a silver complex ofo-aminobenzenesulfonyl glycine

Abstract

The silver complex ofo-aminobenzenesulfonyl glycine crystallizes in the monoclinic space groupP21/n with two molecules of HAg[C6H4(NH2)SO2-NHCH2COO]2 per unit cell of dimensionsa=5.73(2),b=12.16(1),c=13.94(3) A, and β=94.9(1) °. The structure has been solved by the heavy-atom technique using three-dimensional photographic data, and refined by full-matrix least-squares methods, leading to a finalR value of 0.102. The two aminobenzenesulfonyl glycine ligands in the complex are centrosym-metrically arranged with the silver atom at the center of symmetry. The silver atom is surrounded in an approximately square-planar arrangement by two nitrogens (one each from the amino groups attached to benzene rings) and two oxygens (one each from the carboxyl groups) at distances of 2.280 and 2.599 A, respectively. The glycine in this complex is not a zwitterion. The molecules are held together by a three-dimensional network of hydrogen bonds of the type N-H ⋯ O. Both the α-amino nitrogen and that attached to the benzene ring take part in the formation of hydrogen bonds.