Received 27 October 2008
In the title compound, C25H22N4O4, the central benzene ring, makes dihedral angles of 74.35 (6), 17.01 (8) and 62.19 (7)°, respectively, with the nitrobenzyl ring, the pyrazolone ring and the terminal phenyl ring. Intermolecular C-HO hydrogen bonds help to consolidate the crystal packing.
For the potential applications of Schiff bases, see: Jones et al. (1979); Larson & Pecoraro (1991); Santos et al. (2001). For a related structure, see: Han & Zhen (2005). For bond-length data, see: Allen et al. (1987).
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); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB2829 ).
The project was supported by the Foundation of the Education Department of Hebei Province (grant No. 606022).
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.
Bruker (1999). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Han, J.-R. & Zhen, X.-L. (2005). Acta Cryst. E61, o3815-o3816.
Jones, R. D., Summerville, D. A. & Basolo, F. (1979). Chem. Rev. 17, 139-179.
Larson, E. J. & Pecoraro, V. L. (1991). J. Am. Chem. Soc. 113, 3810-3818.
Santos, M. L. P., Bagatin, I. A., Pereira, E. M. & Ferreira, A. M. D. C. (2001). J. Chem. Soc. Dalton Trans. pp. 838-844.
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.