Monoprotonated o-Phenylenediamine Dihydrogenphosphate

The crystal structure of 2-aminophenylammonium dihydrogenphosphate, C₆H₉N₂⁺.H₂PO₄⁻, consists of layers built up from H₂PO₄⁻ tetrahedra alternating with singly protonated orthophenylenediamine molecules. Two types of hydrogen bond, O—H...O and N—H...O, ensure the cohesion and stability of the structure.

-1