Crystal structure and Hirshfeld surface analysis of N,N′-bis­(2-nitro­phen­yl)glutaramide

The asymmetric unit of the title compound, C(17)H(16)N(4)O(6), contains two independent mol­ecules (A and B). The two benzene rings are twisted by an angle of 79.14 (7)° in mol­ecule A, whereas, in mol­ecule B, they are inclined by 19.02 (14)°. The conformations of the mol­ecules are stabilized by intra­molecular N—H⋯O hydrogen bonds between the amide nitro­gen atom and the O atom of the ortho-nitro substituent on the phenyl ring, enclosing an S(6) ring motif. In the amide and aliphatic segments, all the N—H, C=O and C—H bonds are anti to each other. In the crystal, the A and B mol­ecules are linked by inter­molecular amide-to-amide N—H⋯O hydrogen bonds, resulting in chains running along the b-axis direction. The inter­molecular inter­actions were analysed using Hirshfeld surface analysis. The two-dimensional fingerprint plots of the inter­molecular contacts indicate that the major contributions are from H⋯H and O⋯H inter­actions.