Acta Cryst. (2012). E68, o2514
[ doi:10.1107/S1600536812032230 ]
Abstract: In the crystal structure of the title compound, C7H7N2+·I-, the cations form inversion-related dimers via weak pairwise C-HN hydrogen bonds. In the dimers, the pyridinium rings are parallel to one another with their mean planes separated by a normal distance of ca 0.28 Å. Weak C-HN interactions between adjacent dimers generate a layer lying parallel to (10-1). The remaining H atoms form C-HI interactions, which link the layers into a three-dimensional structure.
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