In the reaction of pentaiodobenzoic acid (PIBA) and 2-methylpyridine in N,N '-dimethylformamide (2-MePyH)PIBA center dot DMF salt (1) is formed, whose structure is studied by X-ray crystallography. The structure of 1 contains noncovalent interactions of the IMIDLINE HORIZONTAL ELLIPSISO type of the halogen bond, whose energies are estimated by quantum chemical calculations.