2-Benzenesulfonamidobenzoic acid

Abstract

In the title compound, C13H11NO4S, the dihedral angle between the planes of the benzene ring and the carboxyl group is 13.7 (1)°. The molecular structure contains intramolecular N—H...O and C—H...O hydrogen-bonding interactions, while the crystal packing is stabilized by C—H...O and O—H...O hydrogen bonds and C—H...π interactions. The O—H...O hydrogen bonds form a cyclic dimer, with graph-set motif R22(8), about a centre of symmetry.