Crystal structure of a new organic dihydrogenomonophosphate (C6H8N3O)2(H2PO4)2

Chemical preparation, X-ray single-crystal, thermal behavior, and IR spectroscopy investigations are given for a new organic cation dihydrogenomonophosphate (C6H8N3O)2(H2PO4)2 (denoted IAHP) in the solid state. This compound crystallizes in the orthorhombic space group P212121. The unit cell dimensions are: a = 7.422(3) Å, b = 12.568(5) Å, c = 20.059(8) Å with V = 1871.1(13) Å3 and Z = 4. The structure has been solved using direct method and refined to a reliability R factor of 0.029. The atomic arrangement can be described as inorganic layers of H2PO4− anions between which are located the organic groups (C6H8N3O)+ through multiple hydrogen bonds.