Find in Library

The title compound, C19H17ClN4O3S, is a Schiff base compound of 5-chlorosalicylaldehyde and sulfamethazine [4-amino-N-(4,6-dimethyl-2-pyrimidinyl)benzenesulfonamide]. The geometry around the S atom is distorted tetrahedral, comprising two O atoms of the sulfonyl group, a C atom of a benzene ring and the amino N atom. The title compound has an intramolecular O—H...N hydrogen bond and two intermolecular C—H...O and N—H...O hydrogen bonds, which link neighbouring molecules into 10-membered rings. As a result of an unavoidable conformational arrangement, a slightly short intramolecular contact of distance 2.59 Å exists between an O atom of the sulfonyl group and an H atom of the sulfamethazine benzene ring.