Experimental

R factor = 0.040; wR factor = 0.128; data-to-parameter ratio = 16.5. In the title compound, C17H15ClO2S, the dihedral angle between the mean plane [r.m.s. deviation = 0.020 (2) Å] of the benzofuran ring system and the mean plane [r.m.s. deviation = 0.011 (1) Å] of the 4-chlorophenyl ring is 72.68 (6). In the crystal, molecules are linked via pairs of C—H inter-actions into inversion dimers. These dimers are further packed by C—H O hydrogen bonds into supramolecular chains running along the a-axis direction. In addition, the crystal structure also exhibits – interactions between the 4-chlorophenyl rings of adjacent molecules [centroid–centroid distance = 4.094 (3) Å, interplanar distance = 3.648 (3) A ̊ and slippage = 1.656 (3) Å]. Related literature For background information and the crystal structures of related compounds, see: Choi et al. (2010a,b)