Received 16 November 2012
There are two independent molecules in the asymmetric unit of the title compound, C12H9ClN2O4S, in which the dihedral angles between the planes of the benzene rings are 46.90 (14) and 44.50 (14)°. In the crystal, N-HO hydrogen bonds link the molecules into zigzag chains parallel to the a axis.
For studies on the effects of substituents on the structures and other aspects of N-arylsulfonamides, see: Chaithanya et al. (2012); Gowda et al. (2002) and of N-chloroarylamides, see: Gowda & Shetty (2004); Gowda & Weiss (1994); Shetty & Gowda (2004).
Data collection: CrysAlis CCD (Oxford Diffraction, 2009); cell refinement: CrysAlis CCD; data reduction: CrysAlis RED (Oxford Diffraction, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BT6857 ).
BTG thanks the University Grants Commission, Government of India, New Delhi, for a special grant under UGC-BSR one-time grant to faculty and the Department of Science and Technology, Government of India, New Delhi, for the research grant under its promotion of university research and scientific excellence programme.
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