title: 4-(2-Nitro-benzene-sulfonamido)pyridinium nitrate.
abstract: There are two mol-ecules in the asymmetric unit of the title compound, C(11)H(10)N(3)O(4)S(+)·NO(3) (-). 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 π-electrons with those of the pyridinium ring. The crystal structure is stabilized by N-H⋯O hydrogen bonds.
authors.forename: Liang
authors.initials: L
authors.lastname: Zhao
authors.forename: Qi-Fei
authors.initials: QF
authors.lastname: Yu