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Acta Cryst. (2013). E69, o1616
[ doi:10.1107/S1600536813027128 ]

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

H. D. Arman and E. R. T. Tiekink

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 [pi]-[pi] inter­actions between pyridine and benzene rings [inter-centroid distance = 3.6332 (9) Å]. Layers are connected along the a axis by weak [pi]-[pi] inter­actions between benzene rings [3.9577 (10) Å].

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