Hydrogen-bonded sheets in the 1:1 cocrystal of biphenyl-4,4'-dicarboxylic acid with 2,5-di-4-pyridyl)-1,3,4-oxadiazole.

The combination of biphenyl-4,4′-dicarboxylic acid (H2bpa) and the bent dipyridyl base 2,5-di-4-pyridyl-1,3,4-oxadiazole (4-bpo) in a 1:1 molar ratio leads to the formation of the mol­ecular cocrystal (H2bpa)·(4-bpo) or C14H10O4·C12H8N4O. The asymmetric unit contains one-half of an H2bpa unit lying across a centre of inversion and one-half of a 4-bpo mol­ecule lying across a twofold rotation axis. Inter­molecular O—H⋯N inter­actions connect the acid and base mol­ecules to form a one-dimensional zigzag chain. Through further weak C—H⋯O hydrogen bonds between adjacent chains, a two-dimensional sheet-like supramolecular network is afforded. As an extended analogue of terephthalic acid (H2tp), the backbone geometry of H2bpa has an evident influence on the hydrogen-bonding pattern of the title cocrystal compared with that of (H2tp)·(4-bpo). [ABSTRACT FROM AUTHOR]