Acta Cryst. (2001). E57, o1058-o1060  [ doi:10.1107/S1600536801016191 ]

2,4-Dimethylanilinium dihydrogenphosphate

J. Fábry, R. Krupková and P. Vanek

Abstract: 2,4-Dimethylanilinium dihydrogenphosphate, C₈H₁₂N⁺.H₂PO₄^-, (I), is monoclinic (P2₁/c). The ions are held together by O-HO and N-HO hydrogen bonds. In addition there is one C_methyl-HO hydrogen bond. The dihydrogenphosphates and the -NH₃ groups are arranged in sheets which are parallel to the (010) plane. In each sheet there are centrosymmetric pairs of dihydrogenphosphates held by O-HO bonds. These pairs of dihydrogenphosphates are arranged in columns that are parallel to the unit-cell b axis. These columns are held together via -NH₃ groups through N-HO bonds. Each hydrogen from an -NH₃ group is donated to a different dihydrogenphosphate ion. The differential scanning calorimetry experiment showed anomaly during heating at 442 K.

Online 13 October 2001

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