4-Nitro-6-[(8-quinolyl­amino)­methyl­idene]cyclo­hexa-2,4-dien-1-one

The mol­ecule of the title compound, C16H11N3O3, exists in the keto form and the C=O and N—H bonds are mutually cis in the crystal structure. There are two crystallographically independent mol­ecules per asymmetric unit with broadly similar structural data. The only noticeable difference between the two is the dihedral angles between the benzene and the quinoline rings: 1.04 (4) and 3.07 (4)°. In the structure, intra­molecular N—H⋯O(carbon­yl) and N—H⋯N(pyridine) hydrogen bonds exist but there is no evidence of formal inter­molecular hydrogen-bonding associations