4-(5-Bromo-2-hydroxy­phen­yl)but-3-ene-2-one

Abstract

The molecule of the title compound, C10H9BrO2, a doubly conjugated unsaturated ketone, is almost planar (r.m.s. deviation of the non-H atoms = 0.039 Å). In the crystal structure, two mol­ecules are linked across a centre of inversion to form a hydrogen-bonded dimer by way of two O—H⋯O links