Acta Cryst. (2003). E59, o1108-o1110  [ doi:10.1107/S1600536803014740 ]

Disordered 4-hydroxyisophthalic acid

P. J. Cox and M. T. Murphy

Abstract: Molecules of 4-hydroxyisophthalic acid, C₈H₆O₅, are disordered over two equally occupied orientations across a mirror plane. Each molecule contains an O-HO intramolecular hydrogen bond, and both carboxylic acid groups are involved in R₂²(8) intermolecular hydrogen bonding. The crystal structure is further supported by --stacking interactions.

Online 10 July 2003

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