Arman Hadi D, Tiekink Edward R T
Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA.
Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Acta Crystallogr Sect E Struct Rep Online. 2013 Oct 5;69(Pt 11):o1616. doi: 10.1107/S1600536813027128.
The asymmetric unit of the title co-crystal, C12H12N2·2C7H7NO2, comprises a centrosymmetric 4-[2-(pyridin-4-yl)eth-yl]pyridine mol-ecule and a 2-amino-benzoic acid mol-ecule in a general position. The acid has a small twist between the carb-oxy-lic acid residue and the ring [dihedral angle = 7.13 (6)°] despite the presence of an intra-molecular N-H⋯O(carbon-yl) hydrogen bond. Three-mol-ecule aggregates are formed via O-H⋯N(pyrid-yl) hydrogen bonds, and these are connected into supra-molecular layers in the bc plane by N-H⋯O(carbon-yl) hydrogen bonds and π-π inter-actions between pyridine and benzene rings [inter-centroid distance = 3.6332 (9) Å]. Layers are connected along the a axis by weak π-π inter-actions between benzene rings [3.9577 (10) Å].
标题共晶体C12H12N2·2C7H7NO2的不对称单元包含一个中心对称的4-[2-(吡啶-4-基)乙基]吡啶分子和一个处于一般位置的2-氨基苯甲酸分子。尽管存在分子内N-H⋯O(羰基)氢键，但该酸在羧酸残基和环之间有一个小的扭转[二面角 = 7.13 (6)°]。通过O-H⋯N(吡啶基)氢键形成三分子聚集体，并且这些聚集体通过N-H⋯O(羰基)氢键以及吡啶环和苯环之间的π-π相互作用[质心间距 = 3.6332 (9) Å]在bc平面上连接成超分子层。各层沿着a轴通过苯环之间的弱π-π相互作用[3.9577 (10) Å]相连。
