2-Iodo-5-nitro-thio-phene

The title compound, C(4)H(2)INO(2)S, was synthesized by nitration of iodo-thio-phene with acetyl nitrate. The molecule is essentially planar, withthe nitro group tilted by 1.78 (19)° and the iodine atom displaced by 0.0233 (2) Å with respect to the thiophene ring. In the crystal structure, adjacent mol-ecules are linked through weak I⋯O inter-actions [3.039 (2)Å], forming chains extending along the b axis.