Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 4 (April 2013)

organic compounds

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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