Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 1 (January 2012)

organic compounds

Acta Cryst. (2012). E68, o206    [ doi:10.1107/S1600536811053797 ]

4-Nitro­isophthalic acid

Y.-H. Luo and M.-L. Pan

Abstract: In the crystal structure of the title compound, C8H5NO6, both carboxyl groups are involved in inter­molecular centrosymmetric cyclic O-H...O hydrogen-bonding associations, which give a zigzag chain structure extending along (2\overline{1}1). Weak [pi]-[pi] stacking inter­actions are also present [minimum ring centroid separation = 3.893 (4) Å].

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