The supramolecular architecture in 4,4′‐bipyridinium bis(hydrogen oxalate)
The asymmetric unit of the title compound, C10H10N2 2+·2C2HO4 −, consists of one half of a 4,4′‐bipyridinium cation, which has inversion symmetry, and a hydrogen oxalate anion, in which an intramolecular hydrogen bond exists. The cations and anions are connected by O—H...O, N—H...O and C—H...O hydrogen bonds, forming a two‐dimensional network, whereas π–π stacking interactions involving the 4,4′‐bipyridinium cations lead to the formation of a three‐dimensional supramolecular structure. An unusual deca‐atomic ring is formed between two hydrogen oxalate anions, which are linked side‐to‐side via O—H...O hydrogen‐bonding interactions.
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Document Type: Research Article
Affiliations: Ruder Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
Publication date: September 15, 2011