Crystal structure and Hirshfeld surface analysis of a bromo-chalcone: ()-1-(3-bromo-phen-yl)-3-(2,6-di-chloro-phen-yl)prop-2-en-1-one.

In the title chalcone derivative, CHBrClO, the aryl rings are inclined to each by 14.49 (17)°, and the configuration about the C=C bond is . There is a short intra-molecular C-H⋯Cl contact present resulting in the formation of an (6) ring motif. In the crystal, the shortest inter-molecular contacts are Cl⋯O contacts [3.173 (3) Å] that link the mol-ecules to form a 2 helix propagating along the -axis direction. The helices stack up the short crystallographic axis, and are linked by offset π-π inter-actions [inter-centroid distance = 3.983 (1) Å], forming layers lying parallel to the plane. A qu-anti-fication of the inter-molecular contacts in the crystal were estimated using Hirshfeld surface analysis and two-dimensional fingerprint plots.