Received 26 February 2013
In the title compound, C28H18N2O5, the dihedral angle between the terminal benzoate rings is 20.67 (12)°. The central oxadiazole ring is almost coplanar with its two benzene ring substituents, making dihedral angles of 4.80 (16) and 5.82 (16)°. In the crystal, pairs of C-HO hydrogen bonds form inversion dimers with R22(40) ring motifs. The structure also features C-HO, C-H and - interactions [centroid-centroid separation = 3.695 (4) Å].
For the use of oxadiazole derivatives as antimicrobial agents, see: Dhol et al. (2005) and for a related structure, see: Emmerling et al. (2006). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Data collection: CrysAlis PRO (Oxford Diffraction, 2009); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 and Mercury.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SJ5303 ).
MKS thanks theUGC-BRS and the UoM for the award of a fellowship, and MPS gratefully acknowledges financial support (grant F. No. 37-456/2009[SR]) from the UGC, India.
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