2-Iodo-5-nitro­thio­phene

The title compound, C₄H₂INO₂S, was synthesized by nitration of iodo­thio­phene 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 mol­ecules are linked through weak I...O inter­actions [3.039 (2)Å], forming chains extending along the b axis.