Crystal structure of bis(2-aminoanilinium) hydrogen phosphate

The asymmetric unit of the title compound, 2C6H9N2 +-HPO4 2, comprises two 2-aminoanilinium cations and one hydrogen phosphate dianion. In the crystal, the HPO4 2 dianions are linked by O-H ⋯ O hydrogen bonds into chains along [100]. The inorganic anionic chains and organic cations are linked by N-H ⋯ O and N-H ⋯ N hydrogen bonds, forming a two-dimensional supramolecular network extending parallel to (001).