Acta Cryst. (2002). E58, o105-o107  [ doi:10.1107/S1600536801021808 ]

4-Chloro-2-methylanilinium dihydrogenphosphate

J. Fábry, R. Krupková and V. Studnicka

Abstract: The title salt, C₇H₉ClN⁺·H₂PO₄^-, is monoclinic (P2₁/c). The ions are held together by O-HO and N-HO hydrogen bonds. The O-HO bonds interconnect the dihydrogenphosphates into sheets which are parallel to the (100) plane. In each sheet, there are centrosymmetric pairs of dihydrogenphosphates held together by O-HO bonds. In addition, the dihydrogenphosphates are interconnected by -NH₃ groups. Each H atom from an -NH₃ group is donated to a different dihydrogenphosphate ion. A differential scanning calorimetry experiment showed no anomaly between 98 and 420  K.

Online 11 January 2002

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