Acta Cryst. (2008). E64, o1378 [ doi:10.1107/S160053680801917X ]
Abstract: The asymmetric unit of the title compound, C12H8N2O6S, an important diphenyl sulfone derivative, contains one half-molecule; a mirror plane passes through the SO2 group. The dihedral angle between the two symmetry-related benzene rings is 40.10 (13)°. An intramolecular C-HO hydrogen bond results in the formation of a five-membered ring, which adopts an envelope conformation.
Online 5 July 2008
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