Acta Cryst. (2013). E69, o76 [ doi:10.1107/S1600536812048076 ]
Abstract: In the title compound, C12H8Cl2N2O4S, the N-C bond in the C-SO2-NH-C segment has gauche torsions with respect to the S=O bonds. Further, the N-H bond is syn to the ortho-nitro group in the sulfonyl benzene ring and also syn to both the ortho- and meta-Cl atoms in the aniline ring. The molecule is twisted at the S-N bond with a torsion angle of 61.15 (18)°. The dihedral angle between the planes of the benzene rings is 68.00 (6)°. The amide H atom exhibits an intramolecular bifurcated N-H(O,O) hydrogen bond. In the crystal, pairs of N-HO(S) hydrogen bonds link the molecules into inversion dimers with R22(8) motifs.
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