Benzene-1,3-dicarb­oxy­lic acid–1,2-bis­(4-pyrid­yl)ethene (1/1)

In the title compound, C(12)H(10)N(2)·C(8)H(6)O(4), the asymmetric unit contains two halves of 1,2-bis­(4-pyrid­yl)ethene (bpe) mol­ecules and one benzene-1,3-dicarb­oxy­lic acid (1,3-H(2)BDC) mol­ecule. These bpe and 1,3-H(2)BDC mol­ecules are linked by classical O—H⋯N hydrogen bonds, forming an extended one-dimensional zigzag chain. Each chain is further linked with neighboring ones by π–π inter­actions between the pyridine and aromatic rings [centroid–centroid distances = 3.9306 (15) Å] and the pyridine rings of pairs of symmetry-related mol­ecules [centroid–centroid distances = 3.5751 (15), 3.7350 (15) and 3.6882 (15) Å], with the formation of a three-dimensional supra­molecular framework.