Acta Cryst. (2013). E69, o1716
[ doi:10.1107/S1600536813029012 ]
Abstract: The title compound, C14H12ClNO4S, crystallizes with two molecules in the asymmetric unit. The dihedral angles between the benzene rings are 89.68 (1) (molecule 1) and 82.9 (1)° (molecule 2). In each molecule, intramolecular N-HO hydrogen bonds between the amide H atom and the methoxy O atom generate S(6) loops. In the crystal, molecule 2 is linked into inversion dimers through pairs of C-HO interactions, forming an R22(8) ring motif. Molecules 1 and 2 are further linked along the b-axis direction through C-H interactions. The crystal structure is further stabilized by several - stacking interactions [centroid-centroid separations = 3.7793 (1), 3.6697 (1) and 3.6958 (1) Å], thus generating a three-dimensional architecture.
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