2-Chloro-5-(2-iodo­benzene­sulfonamido)­benzoic acid

In the mol­ecule of the title compound, C(13)H(9)ClINO(4)S, the coordination around the S atom is distorted tetra­hedral. The aromatic rings are oriented at a dihedral angle of 74.46 (9)°. Intra­molecular C—H⋯O hydrogen bonds result in the formation of two five- and one six-membered rings, which adopt planar, envelope and twisted conformations, respectively. In the crystal structure, inter­molecular N—H⋯O and O—H⋯O hydrogen bonds link the mol­ecules to form R (2) (2)(8) ring motifs, which are further linked by C—H⋯O hydrogen bonds. π–π contacts between the benzene rings [centroid–centroid distances = 3.709 (3) and 3.772 (3) Å] may further stabilize the structure. The I atom is disordered over two positions, refined with occupancies of ca 0.75 and 0.25.