title: 5-Fluoro-isophthalic acid.
abstract: In the crystal structure of the title compound, C(8)H(5)FO(4), the complete molecule is generated by crystallographic twofold symmetry with two C atoms and the F atom lying on the axis. The mol-ecule is almost planar with the carboxyl group twisted with respect to the mean plane of the benzene ring by a dihedral angle of 2.01 (1)°. In the crystal, inter-molecular O-H⋯O hydrogen bonds and C-H⋯F inter-actions connect the mol-ecules into a two-dimensional supra-molecular array.
authors.affiliation: Key Laboratory of Fine Petrochemical Technology, Changzhou University, Changzhou 213164, People's Republic of China.
authors.forename: Jin-Ling
authors.initials: JL
authors.lastname: Mi
authors.forename: Le
authors.initials: L
authors.lastname: Chen
authors.forename: Ming-Yang
authors.initials: MY
authors.lastname: He