1-(2-Ammonio­eth­yl)piperazin-1,4-diium dihydrogeno­phosphate monohydrogeno­phosphate

The structure of the title compound, C₆H₁₈N₃·HPO₄·H₂PO₄, is characterized by two kinds of inorganic chains running along the a-axis direction. The first one is composed of HPO₄²⁻ anions, while the second one is built up by H₂PO₄⁻ anions. Both types of chains are held together by O—H...O hydrogen bonds. The organic cations are attached to these chains through N—H...O and C—H...O hydrogen bonds. The piperazin-1,4-diium ring adopts a chair conformation.