Crystal structure of 8-bromo-4-oxo-4H-chromene-3-carbaldehyde

In the title compound, C(10)H(5)BrO(3), a brominated 3-formyl­chromone, all atoms are essentially coplanar (r.m.s. = 0.0104 Å for the non-H atoms), with the largest deviation from the least-squares plane [0.028 (5) Å] being for one of the benzene C atoms. In the crystal, mol­ecules are linked through C—H⋯O hydrogen bonds, which are further assembled by face-to-face π–π stacking inter­actions [centroid–centroid distance between the pyran rings = 3.854 (4) Å]. Shorter contacts than the sum of van der Waals radii are observed between the Br and formyl O atoms [Br⋯O = 3.046 (4) Å, C—Br⋯O = 175.23 (18)° and Br⋯O—C = 132.6 (3)°], features that do indicate halogen bonding.