Acta Cryst. (2012). E68, o3361
[ doi:10.1107/S1600536812046077 ]

4-Aminopyridinium 2-chloro-4-nitrobenzoate monohydrate

K. L. Savig and A. Lemmerer

Abstract: In the title hydrated molecular salt, C₅H₇N₂⁺·C₇H₃ClNO₄^-·H₂O, the ions and water molecules assemble into ribbons of R₆⁵(22) rings along the c axis via O(water)-HO^-, N⁺-HO(water) and N-HO^- hydrogen bonds. N-HO^- hydrogen bonds connect adjacent ribbons along the c-axis direction via R₄⁴(12) rings, forming hydrogen-bonded layers. The CO₂ and NO₂ groups make dihedral angles of 81.8 (2) and 1.4 (2)°, respectively, with the ring in the anion.

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