4-[(2-Hydroxybenzylidene)amino]-N-(5-methylisoxazol-3-yl)benzenesulfonamide: a monoclinic polymorph

Abstract

The title compound, C17H15N3O4S, is a monoclinic polymorph with space group P21/c of the previously reported triclinic form in P [Subashini et al. (2009 ▶). J. Chem. Crystallogr. 39, 112–116]. In both polymorphs, intra­molecular O—H⋯N hydrogen bonds and dimer formation via a pair of inter­molecular N—H⋯N hydrogen bonds with an R 2 2(8) motif are observed. The two polymorphs differ in the next level of supra­molecular organization involving C—H⋯O hydrogen bonds with varied packing and different conformations.