title: 6-Fluoro-1H-indole-3-carb-oxy-lic acid.
abstract: In the title compound, C(9)H(6)FNO(2), all the non-H atoms are approximately coplanar, the carb-oxy O atoms deviating by 0.0809 and -0.1279 Å from the indole plane. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into dimers which are linked via N-H⋯O hydrogen bonds and π-π inter-actions [centroid-centroid distance = 3.680 (2) Å].
authors.affiliation: College of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189,  People's Republic of China.
authors.forename: Ming
authors.initials: M
authors.lastname: Lou
authors.forename: Yang-Hui
authors.initials: YH
authors.lastname: Luo