N-(5-Nitro-pyridin-2-yl)-5H-dibenzo[d,f][1,3]diazepine-6-carboxamide

Abstract

The title compound, C19H13N5O3, can be obtained from the corresponding -amido - amino-nitrone in a reaction with biphenyl-2,2′-diamine. The amido-amidine core has distinctive geometrical parameters including: an outstandingly long Csp 2 - Csp 2 single bond of 1.5276 (13) Å and an amidine N - C - N angle of 130.55 (9)°. Intra-molecular N - H⋯O, N - H⋯N and C - H⋯O hydrogen bonds occur. In the crystal, mol-ecules form layers parallel to (001) via weak inter-molecular C - H⋯N inter-actions. The layers are linked via N - H⋯O hydrogen bonds and π-π inter-actions along [001] [benzene-pyridine centroid-centroid distance = 3.672 (2) Å].