4,4′-Bipyridine–5-fluoro­isophthalic acid (1/1)

Co-crystallization of 5-fluoro­isophthalic acid (H(2)fip) with 4,4′-bipyridine (bipy) leads to the formation of the title compound [(H(2)fip)(bipy)], C(8)H(5)FO(4)·C(10)H(8)N(2), with an acid–base molar ratio of 1:1. The acid and base subunits are arrange alternately in the crystal structure, displaying a wave-like tape motif via inter­molecular O—H⋯N and C—H⋯O hydrogen bonds [carbox­yl–pyridine synthon of R (2) (2)(7) hydrogen-bond notation], which are further combined into a two-dimensional architecture through C—H⋯F inter­actions involving the bipy and H(2)fip mol­ecules.