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In the title compound, C 12 H 10 N 4 O 2 , the dihedral angle between the aromatic rings is 43.18 (16)°. The nitro group is rotated from its attached ring by 7.8 (2)° and a short intra­molecular N—H⋯N contact occurs. In the crystal, the mol­ecules are linked by N—H⋯N and C—H⋯O hydrogen bonds, generating a three-dimensional network.

4-Nitro-N^2^-(pyridin-4-ylmethylidene)benzene-1,2-diamine