In the title Schiff base, C21H14N4O4, the dihedral angle between the two nitro groups and the central benzene ring are 83.6 (5) and 2.6 (6)°. The anthracene ring system and the benzene ring make a dihedral angle of 0.7 (2)°. Intra-molecular N-H⋯O and C-H⋯N hydrogen bonds occur. In the crystal, C-H⋯O hydrogen bonds link the mol-ecules, forming chains along the b-axis direction.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3648239 | PMC |
| http://dx.doi.org/10.1107/S1600536813009197 | DOI Listing |
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