Received 18 August 2013
In the title molecule, C22H22N2O4, the ethoxyphenyl rings are oriented at dihedral angles of 69.31 (13) and 75.90 (13)° to the nitrophenyl ring and are twisted to each other, making a dihedral angle of 78.55 (13)°. In the crystal, weak C-HO hydrogen bonds and C-H interaction link the molecules into a three-dimensional supramolecular architecture.
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: XU5734 ).
This work was supported by the National Natural Science Foundation of China (grant No. 21071001), the Education Committee of Anhui Province (grant No. KJ2010A030) and the Natural Science Foundation of Anhui Province (grant No. 1208085MB22).
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