Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 8 (August 2013)

organic compounds

Acta Cryst. (2013). E69, o1312    [ doi:10.1107/S1600536813019843 ]


Y. Ishikawa and S. Matsuo

Abstract: The title mol­ecule, C9H7NO3, exists in the diketo form and the iso­quinoline unit is approximately planar (r.m.s. deviation = 0.0158 Å). In the crystal, mol­ecules are linked into inversion dimers through pairs of O-H...O hydrogen bonds and are further assembled into the (100) layers via stacking inter­actions [centroid-centroid distances = 3.460 (3) and 3.635 (4) Å].

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