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organic compounds
Molecules of 4-hydroxyisophthalic acid, C8H6O5, are disordered over two equally occupied orientations across a mirror plane. Each molecule contains an O-H
O intramolecular hydrogen bond, and both carboxylic acid groups are involved in R22(8) intermolecular hydrogen bonding. The crystal structure is further supported by ![[pi]](/logos/entities/pi_rmgif.gif)
--stacking interactions.
O 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.Supporting information
 | Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536803014740/cf6269sup1.cif |
 | Structure factor file (CIF format) https://doi.org/10.1107/S1600536803014740/cf62691sup2.hkl |
CCDC reference: 221675
![[sigma]](http://journals.iucr.org/logos/entities/sigma_rmgif.gif){kind=small}
(C-C) = 0.004 Å
