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Acta Cryst. (2012). E68, o187  [ doi:10.1107/S1600536811053426 ]

5-Fluoro-1H-indole-3-carboxylic acid

W.-J. Lu, Z.-H. Zou and Y.-H. Luo

Abstract: In the title compound, C9H6FNO2, the carboxyl group is twisted slightly away from the indole-ring plane [dihedral angle = 7.39 (10)°]. In the crystal, carboxyl inversion dimers linked by pairs of O-H...O hydrogen bonds generate R22(8) loops and N-H...O hydrogen bonds connect the dimers into (10\\overline{1}) sheets.

Online 21 December 2011

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