(E)-N'-(4-Chloro-benzyl-idene)-p-toluene-sulfonohydrazide 0.15-hydrate.

The asymmetric unit of the title compound, C(14)H(13)ClN(2)O(2)S·0.15H(2)O, a novel sulfonamide derivative, comprises two crystallographically independent mol-ecules (A and B) and a water mol-ecule of crystallization, which is partially occupied. One of the mol-ecules (B) is disordered over two positions (B and C) with refined site occupancies of 0.605 (10) and 0.395 (10). The dihedral angles between the two benzene rings in mol-ecules A, B and C are 67.8 (3), 74.6 (5) and 84.96 (11)°, respectively. In the crystal structure, inter-molecular N-H⋯O and C-H⋯O hydrogen bonds link the components of the asymmetric unit. The crystal structure is further stabilized by inter-molecular π-π inter-actions [centroid-centroid distances = 3.4518 (10)-3.5859 (10) Å].