Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 8 (August 2013)

organic compounds

Acta Cryst. (2013). E69, o1361    [ doi:10.1107/S1600536813019296 ]


S.-W. Huang, Z.-M. Yang, F.-P. Huang and J.-K. Qin

Abstract: The title compound, C13H6Br2O4, derived from xanthone, a fundamental structural framework of active ingredients in many medicinal plants, and was synthesized by bromination of 1,3-di­hydroxyxanthen-9-one with N-bromo­succinimide. The mol­ecular conformation is essentially planar, the dihedral angle between the benzene rings being 1.1 (4)°. This conformation is favorable for the formation of an intra­molecular O-H...O hydrogen bond between a hy­droxy group and the xanthone carbonyl group. In the crystal, mol­ecules are associated into chains along the b-axis direction via C=O...H-O hydrogen bonds involving the other hy­droxy group.

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