Synthesis and Crystal Structure of 1-{N′-[(4-chlorobenzene)sulfonyl]carbamimidoyl}-3-phenylthiourea Dimethyl Sulfoxide Monosolvate

The title compound, C14H13ClN4O2S2·C2H6OS, crystallizes in space group P1 with Z = 4. Both main (‘parent') molecules are closely similar except for minor differences in the orientations of the aromatic rings. The bond angles at the nitrogen atoms of the (S)C—NH—Cguanidine moieties are very wide at ca 130°. The parent molecules display intramolecular hydrogen bonds Ph—N—H...N—S and C—N(H)—H...O=S, and both formula units involve a bifurcated hydrogen bond system from two N—H donors to the oxygen atom of a DMSO molecule; the orientation of the DMSO molecules is however appreciably different. Further classical hydrogen bonds link the residues to form a ribbon parallel to the b axis.