title: 2,6-Diiodopyridine.
abstract: The title compound, C(5)H(3)I(2)N, crystallizes in the polar space group Fmm2, with crystallographic mm2 symmetry imposed on the molecule. Molecules are linked through C-H...N hydrogen bonding to form chains which are, in turn, joined through weak I...I halogen-bonding interactions to form layers. The pyridine ring lies parallel to the polar z axis and has the N atom pointing in the +z direction. The layers stack in a polar fashion normal to the a axis and the absolute structure has been determined.