Experimental Crystal data

R factor = 0.034; wR factor = 0.079; data-to-parameter ratio = 16.6. In the title molecule, C16H19IO4S, the O atom and the methyl group of the methylsulfinyl substituent lie on opposite sides of the plane of the benzofuran fragment. In the crystal, pairs of molecules are linked by I O [3.114 (3) Å] halogen bonding into centrosymmetric dimers. The crystal structure is further stabilized by weak intermolecular C—H O nonclassical hydrogen bonds. Related literature For the crystal structures of similar alkyl 2-(5-iodo-3-methyl-sulfinyl-1-benzofuran-2-yl)acetate derivatives, see Choi et al. (2009a,b). For a review of halogen bonding, see Politzer et al. (2007)