Acta Cryst. (2009). E65, o278  [ doi:10.1107/S1600536808043900 ]

Hemi(4,4'-bipyridinium) hexafluoridophosphate bis(4-aminobenzoic acid) 4,4'-bipyridine monohydrate

Y.-Y. Wu, C.-D. Huang, J.-X. Huang, R.-H. Zeng and Y.-F. Luo

Abstract: In the title compound, 0.5C₁₀H₁₀N₂²⁺·PF₆^-·C₁₀H₈N₂·2C₇H₇NO₂·H₂O, the cation is located on a center of symmetry. The crystal structure is determined by a complex three-dimensional network of intermolecular O-HO, O-HN, N-HN and N-HF hydrogen bonds. - stacking interactions between neighboring pyridyl rings are also present; the centroid-centroid distance is 3.643 (5) Å. The hexafluoridophosphate anion is disordered over two positions with site-occupancy factors of ca 0.6 and 0.4.

Online 10 January 2009

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