Received 10 January 2010
The molecule of the title Schiff base compound, C14H10ClN3O4, exists in a trans configuration with respect to the acyclic C=N bond. The dihedral angle between the two benzene rings is 62.37 (9)°. An intramolecular C-HO hydrogen bond is observed. In the crystal structure, adjacent molecules are linked into a ribbon along  by O-HO and N-HO hydrogen bonds.
For the biological properties of Schiff bases, see: Mohamed et al. (2009); Ritter et al. (2009); Bagihalli et al. (2008). For related structures, see: Fun et al. (2008); Shafiq et al. (2009); Goh et al. (2010); Zhou et al. (2009); Zhou & Yang (2009).
Data collection: SMART (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: CI5018 ).
The authors acknowledge the Hunan Provincial Natural Science Foundation of China (grant No. 09 J J6022) and the Scientific Research Fund of Hunan Provincial Education Department (grant No. 08B031), China, for financial support.
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