Acta Cryst. (2006). E62, o2339-o2341  [ doi:10.1107/S1600536806017156 ]

(2Z)-3-(4-Hydroxyphenyl)-2-(pyridinium-4-yl)acrylonitrile p-toluenesulfonate

M. C. Helvenston, V. N. Nesterov and H. J. Jenkins

Abstract: In the structure of the title compound, C₁₅H₁₃N₂O⁺·C₇H₇O₃S^-, the cation has a Z geometry about the ethylene bridge that links the heterocyclic and aromatic rings. The skeleton of the cation is slightly non-planar; the dihedral angles between the ethylene linkage and the pyridinium ring and p-hydroxyphenyl ring are 9.2 (1) and 2.0 (1)°, respectively. In the crystal structure, the cations are stacked along the b axis, with a head-to-tail orientation, and weak intermolecular C-HN hydrogen bonds link the cations into chains along the a axis. In addition, intermolecular O-HO and C-HO hydrogen bonds between cations and anions link two such chains together with a mean interplanar distance of 3.23 Å between cations.

Online 17 May 2006

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