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Acta Cryst. (2008). E64, o1717-o1718 [ doi:10.1107/S1600536808024999 ]
Abstract: The title compound, C10H9NO4, forms R22(8) dimers due to intermolecular O-H
O hydrogen bonding in the crystal structure. Two dimers are further linked to each other through two intermolecular C-HO hydrogen bonds, forming an R33(7) ring motif. The nitro groups form an intramolecular C-HO hydrogen bond mimicking a five-membered ring. As a result of these hydrogen bonds, polymeric sheets are formed. The aromatic ring makes a dihedral angle of 42.84 (8)° with the carboxylate group and an angle of 8.01 (14)° with the nitro group. There is a ![[pi]](/logos/entities/pi_rmgif.gif)
-interaction (N-O) between the nitro group and the aromatic ring, with a distance of 3.7572 (14) Å between the N atom and the centroid of the aromatic ring.
Online 6 August 2008
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