Received 28 June 2012
aDepartment of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, I. R. of IRAN,bDepartment of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran, and cDepartment of Physics, University of Sargodha, Punjab, Pakistan
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The asymmetric unit of the title compound, C16H12Br4N2O2, comprises half of a potential tetradentate Schiff base ligand. The whole molecule is generated by an inversion center located in the middle of the C-C bond of the ethylene segment. There are intramolecular O-HN hydrogen bonds making S(6) ring motifs. In the crystal, no significant intermolecular interactions are observed.
For standard values of bond lengths, see: Allen et al. (1987). For details of hydrogen-bond motifs, see: Bernstein et al. (1995). For the crystal structure of a similar compound, see: Kia et al. (2012).
Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); 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); 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: SU2470 ).
HK and AAA thank PNU for financial support. MNT thanks GC University of Sargodha, Pakistan, for research facilities.
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1-19.
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555-1573.
Bruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Kia, R., Kargar, H., Adabi Ardakani, A. & Tahir, M. N. (2012). Acta Cryst. E68, o2242-o2243.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.