Received 11 July 2013
The cation in the title compound, C7H7N2+·I-, is planar (r.m.s. deviation for the nine fitted non-H atoms = 0.040 Å). The crystal packing is best described as undulating layers of cations and anions associated via C-HI interactions.
For the structure of 2-cyano-N-methylpyridinium nitrate, see: Koplitz et al. (2012). For structures of 3-cyano-N-methylpyridinium salts, see: Koplitz et al. (2003); Mague et al. (2005). For structures of 4-cyano-N-methylpyridinium salts, see: Kammer, Koplitz & Mague (2012); Kammer, Mague & Koplitz (2012).
Data collection: APEX2 (Bruker, 2013); cell refinement: SAINT (Bruker, 2013); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008b); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2013); molecular graphics: DIAMOND (Brandenburg & Putz, 2012); software used to prepare material for publication: SHELXTL and CELL_NOW (Sheldrick, 2008b).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: TK5240 ).
We thank the Chemistry Department of Tulane University for support of the X-ray laboratory and the Louisiana Board of Regents through the Louisiana Educational Quality Support Fund (Grant LEQSF (2003-2003)-ENH-TR-67) for the purchase of the APEX diffractometer. Michael Kammer was supported by Louisiana Board of Regents grant LEQSF(2007-12)-ENH-PKSFI-PES-03 during the summer of 2011.
Brandenburg, K. & Putz, H. (2012). DIAMOND. Crystal Impact GbR, Bonn, Germany.
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Koplitz, L. V., Mague, J. T., Kammer, M. N., McCormick, C. A., Renfro, H. E. & Vumbaco, D. J. (2012). Acta Cryst. E68, o1653.
Mague, J. T., Ivie, R. M., Hartsock, R. W., Koplitz, L. V. & Spulak, M. (2005). Acta Cryst. E61, o851-o853.
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