Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)


organic compounds



hb7076 scheme

Acta Cryst. (2013). E69, o981-o982    [ doi:10.1107/S1600536813014025 ]

4-Cyano-1-methylpyridinium nitrate

C. A. McCormick, V. D. Nguyen, H. E. Renfro, L. V. Koplitz and J. T. Mague

Abstract: The title molecular salt, C7H7N2+·NO3-, displays an interpenetrating sheet structure parallel to a with each sheet containing nearly coplanar cations and anions, each ion being bisected by a crystallographic mirror plane. C-H...O hydrogen bonds involving both ring and methyl H atoms in addition to cation-cation C-H...N hydrogen bonds (ring H to cyano N) serve to link the sheets together. In each set of parallel layers, the cations and anions stack with short distances of 3.094 (2) (between aligned nitrate N and pyridine N atoms) and 3.057 (2) Å (between a nitrate O atom and the ring centroid). This motif is strikingly similar to the one that features in the isomeric salt 2-cyano-1-methylpyridinium nitrate.


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