4-Nitro­benzoic acid–sulfa­thia­zole (1/1)

In the crystal structure of the title compound, C(7)H(5)NO(4)·C(9)H(9)N(3)O(2)S(2), the sulfa­thia­zole and 4-nitro­benzoic acid mol­ecules are held together by short π–π contacts between the thia­zole and nitro­benzene rings, with a centroid–centroid distance of 3.8226 (7) Å. The sulfa­thia­zole mol­ecules form dimers via N—H⋯N hydrogen bonds involving the thia­zole and sulfonamide moieties, owing to the fact that sulfathizole exhibits amide–imide tautomerism. The N—H (amine) groups of two sulfathiazole molecules are linked to the two S=O groups of a sulfathiazole via N—H⋯O hydrogen bonds. Two mol­ecules of coformer are held together by O—H⋯O hydrogen bonds. These units self-assemble, forming a three-dimensional network stabilized by (acid)C—H⋯π(sulfa­thia­zole benzene ring) inter­actions.