Date Published: August 01, 2009
Publisher: International Union of Crystallography
Author(s): Muhammad Nadeem Arshad, Islam Ullah Khan, Muhammad Shafiq, Muhammad Naeem Khan, Helen Stoeckli-Evans.
The title compound, C8H8BrNO4S, a halogenated sulfonamide, was prepared by basic hydrolysis of the methyl ester. In the crystal, molecules form centrosymmetric hydrogen-bonded dimers via the carboxyl groups. These dimers are further linked by N—H⋯O interactions involving the carbonyl O and amide H atoms, forming a ribbon-like structure propagating in . These ribbons are further linked via C—H⋯O interactions, forming a three-dimensional network.
For details of the crystal structure of the methyl ester of the title compound, see: Arshad et al. (2008b ▶). For related structures, see: Arshad et al. (2008a ▶); Arshad et al. (2009 ▶). For related thiazine heterocycles, see: Arshad et al. (2008c ▶). For hydrogen-bonding patterns, see: Bernstein et al. (1995 ▶).