Abstract
In the crystal structure of the title salt, C10H16N+center dot H2PO4-center dot H3PO4, the H2PO4- and H3PO4 components are connected into infinite chains extending along the b-axis direction by way of O-H center dot center dot center dot O links. These chains are also linked through O-H center dot center dot center dot O hydrogen bonds thus building up a supramolecular two-dimensional framework extending parallel to (001). The organic cations cross-link the anionic layers by way of multiple N-H center dot center dot center dot O interactions, leading to a cohesive network.