The asymmetric unit of the title compound, 3C10H8N2·2C7H7NO2, consists of three molecules of 4,4′-bipyridine (bpy) and two molecules of 3-aminobenzoic acid (bza).Two molecules of bza and two molecules of bpy are connected via O—H.N, N—H.N and N—H.
O hydrogen bonds, forming forming infinite double-stranded zigzag chains along the c axis.The third molecule SALT HAIR SPRAY of bpy is linked to the chain by weak C—H.O interactions.Adjacent chains are linked via HA-180 π–π interactions [centroid–centroid distances = 3.
759 (3)–3.928 (3) Å] involving the pyridine rings of bpy molecules, resulting in a sheet-like structure parallel to (100).These sheets are stacked via C—H.π interactions, resulting finally in the formation of a three-dimensional supramolecular structure.