Experimental

R factor = 0.025; wR factor = 0.060; data-to-parameter ratio = 19.4. There are two symmetry-independent molecules, A and B, in the asymmetric unit of the title compound, C17H14FIO3S. The dihedral angle formed by the 4-fluorophenyl ring and the mean plane [r.m.s. deviation = 0.013 (2) A ̊ in molecule A and 0.016 (2) A ̊ in molecule B] of the benzofuran fragment is 57.71 (7) in molecule A and 44.95 (7) in molecule B. In the crystal, molecules are linked by weak C—H O hydrogen bonds and I O contacts [I O = 3.3646 (15) and 3.2354 (14) Å], forming a three–dimensional network. Related literature For background information and the crystal structures of related compounds, see: Choi et al. (2010a,b). For a review of halogen bonding, see: Politzer et al. (2007)