Synthesis and crystal structure of 4-fluoro­benzyl­ammonium di­hydrogen phosphate FC6H4CH2NH3H2PO4

摘要

The asymmetric unit of the title salt, [p-FC6H4CH2NH3]⁺·H2PO4 ⁻, contains one 4-fluoro­benzyl­ammonium cation and one di­hydrogen phosphate anion. In the crystal, the H2PO4 ⁻ anions are linked by O—H⋯O hydrogen bonds to build corrugated layers extending parallel to the ab plane. The FC6H4CH2NH3 ⁺ cations lie between these anionic layers to maximize the electrostatic inter­actions and are linked to the H2PO4 ⁻ anions through N—H⋯O hydrogen bonds, forming a three-dimensional supra­molecular network. Two hydrogen atoms belonging to the di­hydrogen phosphate anion are statistically occupied due to disorder along the OH⋯HO direction.