Acta Cryst. (2008). E64, o2281 [ doi:10.1107/S1600536808035654 ]
Abstract: There are two molecules in the asymmetric unit of the title compound, C11H10N3O4S+·NO3-. All bond distances have normal values. The C-N bond distances in the sulfonamide group [1.389 (3) and 1.382 (3) Å] may indicate slight conjugation of the sulfonamide N-atom -electrons with those of the pyridinium ring. The crystal structure is stabilized by N-HO hydrogen bonds.
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