| Summary: | In the title compound, C12H10BrClN2O2S, the sulfonamide group adopts a staggered conformation about the N—S bond [the C—S—N—H torsion angle is 97 (3)°] with the N-atom lone pair bisecting the O=S=O angle. For the C(Ar)—S bond, the ortho-substituted C atom bisects one of O=S–N angles [the C—C—S—N torsion angle is −57.7 (3)°]. The mean planes of the aromatic rings form a dihedral angle of 75.1 (1)°. In the crystal, molecules form inversion dimers through pairs of N—H...NH2 hydrogen bonds. The molecules are further consolidated into layers along the bc plane by weaker N—H...O interactions.
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