Acta Cryst. (2003). E59, o542-o544  [ doi:10.1107/S1600536803006007 ]

1-(4-Chloro-2-nitrophenyl)-4,4'-bipyridinium triiodide

Y.-Q. Sun, J. Zhang and G.-Y. Yang

Abstract: The title compound, C₁₆H₁₁ClN₃O₂⁺·I₃^-, consists of a bipyridinium cation and a triiodide anion. The two pyridine rings of the cation are not coplanar, with a dihedral angle of 28.83  (4)°. The benzene ring is also twisted out of the mean plane of the adjoining pyridine ring by 64.27  (5)°. The I₃^- anions are slightly bent and asymmetric, with an I-I-I angle of 178.24  (5)° and I-I bond distances of 2.937  (2) and 2.957  (2)  Å. The packing shows a columnar arrangement, with parallel stacks of bipyridinium and I₃^- ions along the b axis.

Online 31 March 2003

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