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Acta Cryst. (2013). E69, o1725
[ doi:10.1107/S1600536813029474 ]

Uronium 3-carb­oxy-4-hy­droxy­benzene­sulfonate

A. Silambarasan, M. K. Kumar, G. Chakkaravarthi, R. M. Kumar and P. R. Umarani

Abstract: In the title compound, CH5N2O+·C7H5O6S-, the dihedral angle between the benzene ring and the mean plane of the uronium cation is 76.02 (8)°. The carboxyl group in the anion is twisted by 1.47 (9)° from the benzene ring. In the crystal, the cation is linked to the anion by weak O-H...O and N-H...O hydrogen bonds and [pi]-[pi] inter­actions [centroid-centroid distance = 3.8859 (8) Å], forming a three-dimensional network.

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