Received 31 August 2013
aInstitute of Molecular Science, Chemical Biology and Molecular Engineering Laboratory of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China, and bDepartment of Chemistry, Changzhi University, Changzhi, Shanxi 046011, People's Republic of China
Correspondence e-mail: firstname.lastname@example.org
In the title compound, C18H14N2O4, the piperazine ring adopts a chair conformation and the dihedral angle between the aromatic rings is 13.09 (9)°. In the crystal, molecules are linked along the c axis by C-H and N [H(N)-centroid distances = 2.8030 (2) and 3.376 (2) Å] interactions between neighbouring molecules.
For applications of - interactions, see: Janiak (2000). For C-H interactions, see: Ciunik & Desiraju (2001) and for N interactions, see: Lindeman et al. (1998). For the synthesis of the 2,2'-(ethane-1,2-diylbis(azanediyl))dibenzoic acid precursor, see: Berger & Telford (2002).
Data collection: SMART (Bruker, 1999); cell refinement: SAINT (Bruker, 1999); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FF2118 ).
This work was supported by the National Natural Science Foundation of China (Nos. 21271122 and 20901048) and Shanxi Scholarship Council of China (2013-018).
Berger, D. J. & Telford, J. R. (2002). Inorg. Chim. Acta, 341, 132-134.
Brandenburg, K. (1999). DIAMOND. Crystal Impact GbR, Bonn, Germany.
Bruker (1999). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Bruker (2005). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Ciunik, Z. & Desiraju, G. R. (2001). Chem. Commun. pp. 703-704.
Janiak, C. (2000). J. Chem. Soc. Dalton Trans. pp. 3885-3896.
Lindeman, S. V., Kosynkin, D. & Kochi, J. K. (1998). J. Am. Chem. Soc. 120, 13268-13269.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.