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Acta Cryst. (2010). E66, o1366  [ doi:10.1107/S1600536810017502 ]


D. Siegel, S. Troyanov, J. Noack, F. Emmerling and I. Nehls

Abstract: In the title compound (systematic name: 3,7,9-trihydroxy-1-methyl-6H-benzo[c]chromen-6-one), C14H10O5, the methyl group is shifted out of the molecular plane due to a steric collision, thus causing a slight twist of the benzene rings. The molecular structure is stabilized by an intramolecular O-H...O hydrogen bond, generating an S(6) ring. In the crystal, molecules are connected by intermolecular O-H...O hydrogen bonds into a three-dimensional network.

Online 15 May 2010

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