Received 2 December 2011
aSchool of Chemistry and Chemical Engineering, Southeast University, Sipailou No. 2 Nanjing, Nanjing 210096, People's Republic of China,bCentre of Laboratory Animals, Nanjing medical University, Hanzhong Road No. 140 Nanjing, Nanjing 210029, People's Republic of China, and cSchool of Pharmacy, Nanjing Medical University, Hanzhong Road No. 140 Nanjing, Nanjing 210029, People's Republic of China
Correspondence e-mail: email@example.com
In the title molecule, C29H30Br2N2O3, the piperazine ring has a chair conformation and the C=C double bond has an E conformation. The dihedral angle between the bromobenzene rings is 79.1 (3)°. In the crystal, molecules are linked through C-HO and C-HBr hydrogen bonds.
For a related structure and background to cinnamic acid derivatives, see: Teng et al. (2011); Zhong et al. (2011). For further synthetic details, see: Wu et al. (2008). For puckering parameters, see: Cremer & Pople (1975).
Data collection: CAD-4 EXPRESS (Enraf-Nonius, 1994); cell refinement: CAD-4 EXPRESS; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2344 ).
The authors thank Professor Hua-Qin Wang of the Analysis Centre, Nanjing University, for the diffraction measurements. This work was supported by the Natural Science Foundation of Jiangsu Province (No. BK2010538).
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354-1358.
Enraf-Nonius (1994). CAD-4 EXPRESS. Enraf-Nonius, Delft, The Netherlands.
Harms, K. & Wocadlo, S. (1995). XCAD4. University of Marburg, Germany.
North, A. C. T., Phillips, D. C. & Mathews, F. S. (1968). Acta Cryst. A24, 351-359.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Teng, Y.-B., Dai, Z.-H. & Wu, B. (2011). Acta Cryst. E67, o697.
Wu, B., Zhou, L. & Cai, H.-H. (2008). Chin. Chem. Lett. 19, 1163-1166.
Zhong, Y., Zhang, X. P. & Wu, B. (2011). Acta Cryst. E67, o3358.