Acta Cryst. (2009). E65, o1304  [ doi:10.1107/S1600536809017462 ]

3-Ammonio-4-hydroxybenzoate monohydrate

S. Ullah, M. N. Tahir, D. Shahwar, Z.-D. Khan and M. A. Khan

Abstract: The title compound, C₇H₇NO₃·H₂O, which crystallized as a hydrate, was obtained from an extraction of the plant species Saussurea atkinsonii of the asteraceae family collected from the hilly area (Ayubia) of Pakistan during the flowering season. The dihedral angle between the benzene ring and the carboxylate group is 25.64 (5)°. In the crystal, the packing is consolidated by N-HO and O-HO hydrogen bonds, as well as weak aromatic - stacking [centroid-centroid separation = 3.9365 (9) Å] and C=O interactions.

Online 14 May 2009

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