Abstract
The title compound, C(5)H(6)N(3)O(2)(+)center dot ClO(4)(-), is comprised of discrete perchlorate anions and 2-amino-3-nitropyridinium cations. The anion has a typical tetrahedral geometry while the cation presents a nearly planar [maximum deviation = 0.007 (8) angstrom]pyridinium ring. Undulating [C(5)H(6)N(3)O(2)(+)](n) chains extending along the c-axis direction are linked via N-H center dot center dot center dot O hydrogen bonds. The cations are further connected to the anions by N-H center dot center dot center dot O hydrogen bonds and weak C-H center dot center dot center dot O interactions, leading to the formation of a three-dimensional network.