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In the title compound, C13H13Cl2N3OS, the thiazole and benzene rings are roughly parallel to one another in two layers [dihedral angle = 5.08 (2)°] because the N—C—C—N—C chain that links the two rings is folded [N—C—C—N torsion angle = 12.0 (2)°] rather than fully extended. An intramolecular N—H...N interaction occurs. In the crystal, weak intermolecular N—H...N and C—H...O interactions are present and π–π interactions are indicated by the short distances [3.507 (3)–3.665 (2) Å] between the centroids of the thiazole and benzene rings.