4-Chloro-N-(4-chlorophenylsulfonyl)-N-(3-oxo-2,3-dihydro-1,2-benzisothiazol-2-yl)benzenesulfonamide

In the title compound, C(19)H(12)Cl(2)N(2)O(5)S(3), the benzene rings of the chlorophenylsulfonyl groups form a dihedral angle of 35.85 (8)degrees and are inclined at angles of 23.51 (6) and 59.22 (6)degrees with respect to the essentially planar benzisothiazole ring system [maximum deviation = 0.030 (2) angstrom]. The molecular conformation is stabilized by an intramolecular C-H center dot center dot center dot O hydrogen bond. In the crystal packing, molecules are linked into chains parallel to the a axis by intermolecular C-H center dot center dot center dot O hydrogen bonds and pi-pi stacking interactions, with centroid-centroid distances of 3.592 (5) angstrom.