(IUCr) Crystallography Journals Online

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Acta Cryst. (2009). E65, o2346-o2347 [ doi:10.1107/S1600536809034588 ]

1,1'-Dimethyl-4,4'-[(2,4-diphenylcyclobutane-1,3-diyl)dipyridinium-(E)-1-methyl-4-styrylpyridinium-benzenesulfonate (0.15/1.70/2)

H.-K. Fun, C. Surasit, K. Chanawanno and S. Chantrapromma

Abstract: In the title compound, 1.70C₁₄H₁₄N⁺·0.15C₂₈H₂₈N₂²⁺·2C₆H₅O₃S^-, the monocation exists in the E configuration with respect to the ethenyl C=C double bond and is close to planar, the dihedral angle between the pyridinium and phenyl ring being 5.20 (13)°. The dication lies about an inversion centre. In the crystal, the dication occupies almost the same site occupied by monocations at (x, y, z) and (2 - x, 1 - y, 1 - z). The O atoms of the anion are disordered over two positions with occupancies of 0.75 and 0.25. In the crystal, the cations are stacked in an antiparallel manner along the a axis, whereas the anions are linked into chains along the same direction by C-HO hydrogen bonds. In addition, C-H [pi] and [pi] - [pi] interactions [centroid-centroid distance = 3.593 (9) or 3.6705 (16) Å] are observed.

Online 5 September 2009