Received 15 May 2011
In the title compound, C16H16N4O6, the planes of the isoindole and dinitrobenzene groups make a dihedral angle between of 84.15 (8)°. The N atom of the isoindole group is displaced by 0.2937 (3) Å from the plane through the remaining atoms. An intramolecular N-HO interaction occurs. In the crystal, inversion dimers linked by pairs of N-HO hydrogen bonds occur.
Data collection: APEX2 (Bruker, 2003); cell refinement: SAINT (Bruker, 2003); 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: EZ2248 ).
This work was supported by the Key Project of Science and Technology of Anhui, (grant No. 08010302218), the Natural Science Foundation of Anhui Provincial University (grant No. KJ2009A127) and the National Natural Science Foundation of China (grant No. 20971024).
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