Date Published: June 01, 2011
Publisher: International Union of Crystallography
Author(s): Giovanna Brancatelli, Giuseppe Bruno, Francesco Nicoló, Loredana Canfora, Giuseppe Ruisi.
The zwitterionic title compound, C12H17NO3S, is a reduced Schiff base derived from (S)-N-(2-hydroxybenzylidene)methionine. An intramolecular interaction between the N—H and carboxylate groups forms a roughly planar (r.m.s. deviation = 0.1405 Å) five-membered ring containing the H(N), N, Cα, C(carboxylate) and O atoms in a pentagonal conformation. In the crystal, a supramolecular triangle-shaped motif is generated by molecules held together by O—H⋯O and N—H⋯O hydrogen bonds.
For transition metal complexes containing N-(2-hydroxybenzyl)-α-amino acids as ligands, see: Bandyopadhyay et al. (2006 ▶); Beltrán et al. (2002 ▶); Ganguly et al. (2008 ▶); Koh et al. (1996 ▶); Martell (1989 ▶); Maurya (2003 ▶); Nefkens & Zwanenburg (1985 ▶); Ritsma (1975 ▶); Shongwe et al. (1999 ▶); Sreenivasulu & Vittal (2004 ▶); Wilson (1990 ▶).