2-Aminobenzoic acid–4-[2-(pyridin-4-yl)ethyl]pyridine (2/1)

Abstract

The asymmetric unit of the title co-crystal, C12H12N2·2C7H7NO2, comprises a centrosymmetric 4-[2-(pyridin-4-yl)ethyl]pyridine molecule and a 2-aminobenzoic acid molecule in a general position. The acid has a small twist between the carboxylic acid residue and the ring [dihedral angle = 7.13 (6)°] despite the presence of an intramolecular N—H...O(carbonyl) hydrogen bond. Three-molecule aggregates are formed via O—H...N(pyridyl) hydrogen bonds, and these are connected into supramolecular layers in the bc plane by N—H...O(carbonyl) hydrogen bonds and π–π interactions between pyridine and benzene rings [inter-centroid distance = 3.6332 (9) Å]. Layers are connected along the a axis by weak π–π interactions between benzene rings [3.9577 (10) Å].