Abstract
In the title compound, C5H9N4+center dot NO3-, the organic cations and the nitrate anions have both crystallographically imposed mirror symmetry and are linked via N-H center dot center dot center dot O hydrogen bonds, forming infinite chains running along the c-axis direction. The values of the N-O bond lengths [1.2256 (19)-1.2642 (18) angstrom] and O-N-O angles [118.39 (16)-121.64 (15)degrees] indicate that the nitrate anion exhibits a slightly distorted C-3h geometry. The N atom of the NH2 group has sp(2) character.