4-Nitro­phenyl­hydrazinium picrate monohydrate

In the crystal structure of the title compound, C₆H₈N₃O₂⁺·C₆H₂N₃O₇⁻·H₂O, N—H...O and O—H...O hydrogen bonds link the components into a two-dimensional network parallel to (010). In addition, there are pairs of weak inversion-related C—H...O hydrogen bonds within the two-dimensional network. The three nitro groups are twisted by 1.6 (3), 7.8 (3) and 12.1 (3)° from the ring plane in the anion, while in the cation, the nitro group makes a dihedral angle of 4.6 (2)° with the ring.