Acta Cryst. (2012). E68, o2621
[ doi:10.1107/S1600536812033661 ]

2,3,5-Triphenyl-2H-tetrazol-3-ium iodide

H.-K. Fun, T. S. Chia, G. A. E. Mostafa, M. M. Abunassif and H. A. Abdel-Aziz

Abstract: The asymmetric unit of the title molecular salt, C₁₉H₁₅N₄⁺·I^-, contains four 2,3,5-triphenyl-2H-tetrazol-3-ium cations and five iodide anions, with two of the latter lying on crystallographic inversion centres. In each cation, the tetrazole ring is essentially planar (r.m.s. deviations = 0.004-0.007 Å). The dihedral angles between the tetrazole ring and its three attached benzene rings in the four independent cations are: 12.9 (4), 67.0 (4), 48.1 (4); 20.8 (4), 51.1 (4), 62.3 (4); 11.4 (4), 52.3 (4), 47.3 (4) and 6.0 (4), 85.7 (4), 43.5 (4)°. A C-HI hydrogen bond and C-H interactions are observed in the crystal.

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