Acta Cryst. (2012). E68, o67-o68 [ doi:10.1107/S1600536811052433 ]
Abstract: The asymmetric unit of the title compound, C36H32N22+·2I-, consists of one half-molecule of the cation and one I- anion. The cation is located on an inversion centre. The dihedral angle between the pyridinium ring and the naphthalene ring system in the asymmetric unit is 19.01 (14)°. In the crystal, the cations and the anions are linked by C-HI interactions into a layer parallel to the bc plane. Intra- and intermolecular - interactions with centroid-centroid distances of 3.533 (2)-3.807 (2) Å are also observed.
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