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Acta Cryst. (2013). E69, o284
[ doi:10.1107/S1600536812051872 ]


N. S. Topno, V. Tangeti, H. S. P. Rao and R. Krishna

Abstract: In the title compound, C13H9NO6, the coumarin system has the benzene ring aligned at 0.61 (18)° with respect to the pyrone ring. An intramolecular O-H...O hydrogen bond stabilizes the molecular conformation and a C-H...O contact also occurs. In the crystal, weak C-H...O interactions link the molecules, forming inversion dimers.

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