Received 25 March 2010
The asymmetric unit of the title compound, C12H12N2·C7H7NO2, contains two 3-aminobenzoic acid molecules and two 1,2-bis(4-pyridyl)ethane molecules. In the two 1,2-bis(4-pyridyl)ethane molecules, the dihedral angles between the pyridyl rings are 2.99 (9) and 46.78 (8)°. In the crystal, the molecules associate through amine and carboxyl group N-HO=C interactions between one of the 3-aminobenzoic acid molecules and one of the 1,2-bis(4-pyridyl)ethane molecules, generating R22(14) dimers, which are extended head-to-tail via amine and pyridine N-HN hydrogen bonds. Intermolecular O-HN, N-HO, N-HN and C-HO hydrogen bonding are observed in the crystal structure. C-H and - stacking interactions [centroid-centroid distance = 3.9985 (10) Å] are also present.
For applications of 3-aminobenzoic acid, see: Lynch & McClenaghan (2001); Smith (2005). For related structures, see: Smith et al. (1995); Lynch et al. (1998). For a similar dimeric R22(14) structure, see: Etter et al. (1990).
Data collection: CrysAlis CCD (Oxford Diffraction, 2008); cell refinement: CrysAlis RED (Oxford Diffraction, 2008); data reduction: CrysAlis RED; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: PLATON.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: XU2742 ).
This work was supported financially by Yuanpei University.
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