Crystal structure of (E)-N-{2-[2-(3-chloro­benzyl­idene)hydrazin­yl]-2-oxoeth­yl}-4-methyl­benzene­sulfonamide monohydrate

The mol-ecule of the title compound, C16H16ClN3O3S·H2O, is L-shaped being bent at the S atom; the S-N-C-C torsion angle is 132.0 (3)°. The central part of the mol-ecule, C-C-N-N=C, is almost linear, with the C-C-N-N and C-N-N=C torsion angles being -174.1 (2) and 176.0 (2)°, respectively. The dihedral angle between the p-toluene-sulfonyl ring and the S-N-C-C(=O) segment is 67.5 (4)°, while that between the two aromatic rings is 52.17 (11)°. In the crystal, the water H atom is involved in O-H⋯O hydrogen bonds with a sulfonamide O atom and the carbonyl O atom. The water O atom is itself hydrogen bonded to both NH hydrogen atoms. These four hydrogen bonds lead to the formation of corrugated sheets lying parallel to (100). There are also weak C-H⋯O contacts present within the sheets.