Acta Cryst. (2003). E59, o942-o944  [ doi:10.1107/S1600536803012194 ]

Diphenic acid-4,4'-bipyridine (2/1)

T. W. Lee, J. P. K. Lau and L. Szeto

Abstract: In the title co-crystal, 2C₁₄H₁₀O₄·C₁₀H₈N₂, the diphenic acid molecules form a centrosymmetric dimeric pair, through strong O-HO hydrogen bonds involving a carboxylic acid group from each molecule. In the crystal structure, the dimers are linked by C-HO interactions to form layers parallel to the (001) plane. The adjacent layers are interlinked by bipyridine molecules, C₁₀H₈N₂, through O-HN hydrogen bonds. The bipyridine molecule lies on a centre of symmetry.

Online 17 June 2003

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