1,4-Dimethyl-1,4-diazo­nia­bicyclo­[2.2.2]octane diiodide acetonitrile solvate.

In the crystal structure of the title compound, C₈H₁₈N₂²⁺·2I⁻·CH₃CN, the dication lies on a mirror plane containing the mol­ecular dication threefold axis. The structure displays C—H⋯I inter­actions between H atoms of the 1,4-dimethyl-1,4-diazo­nia­bicyclo­[2.2.2]octane dication and the iodide anions. The H⋯I distances are in the range 2.96–3.18 (4) Å. The dications pack forming channels along the b axis, which contain the iodide anions and acetonitrile solvent mol­ecules. [ABSTRACT FROM AUTHOR]