1-(1-Benzofuran-2-yl)-2-chloroethanone

Abstract

Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.004 Å; R factor = 0.086; wR factor = 0.165; data-to-parameter ratio = 23.1.The title compound, C 10 H 7 ClO 2 , was synthesized from 1-benzofuran-2-ylethanone by chlorination with thionyl chloride. The benzofuran ring system and the carbonyl group are coplanar. The carbonyl group is in a syn position relative to both the O atom of the benzofuran ring and the Cl atom. C-HÁ Á ÁO contacts are found between the methylene group and carbonyl O atom. Molecules related by a centre of symmetry are involved ininteractions, with distances between the centroids of the furan rings of 3.785 (3) Å .