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Acta Cryst. (2013). E69, o591
[ doi:10.1107/S160053681300754X ]

Cyclohexane-1,4-dicarboxylic acid-pyridinium-4-olate (1/1)

A. Cruz-Enríquez, H. J. Peinado-Guevara, V. Reyes-Marquez, H. Höpfl and J. J. Campos-Gaxiola

Abstract: In the title adduct, C5H5NO·C8H12O4, the heterocycle exists in its zwitterionic form. The cyclohexane ring exhibits a chair conformation with the carboxylic acid groups in equatorial and axial orientations. In the crystal, molecules are linked through charge-assisted O-H...O-, N+-H...O- and N+-H...O hydrogen bonds, and an additional series of C-H...O contacts, giving a pleated two-dimensional hydrogen-bonded network parallel to (-204).

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