2-Hydroxy-2-trifluoromethyl-3,4-dihydro-2H-1-benzopyran-4-one

Abstract

The heterocyclic ring in the title compound, C10H 7F3O3, has a half-boat conformation with the hydroxy-bearing C atom lying 0.595 (3) Å out of the plane of the five remaining atoms (r.m.s. deviation = 0.022 Å) in the direction of the hydroxy O atom. Linear supramolecular chains along the a axis, sustained by O - H⋯O hydrogen bonds between the hydroxy H and ketone O atoms, feature in the crystal packing. These chains are connected into a three-dimensional architecture by C - H⋯O and C - H⋯F contacts. © 2012 International Union of Crystallography.