N,N′-Diethyl-N,N′-diphenyl­pyridine-2,6-dicarboxamide

The asymmetric unit of the title compound, C(23)H(23)N(3)O(2), contains two mol­ecules in both of which, one amide N atom is in a syn position with respect to the pyridine N atom, while the other amide N atom is in an anti position (the syn--anti conformation). There are minor conformational differences between the two mol­ecules, as reflected in the N(pyridine)—C—C—N(amide) torsion angles of −44.9 (3) and 136.0 (2)° for one mol­ecule and 43.5 (3) and −131.1 (2)° for the other mol­ecule. However, the two mol­ecules show significant differences in the orientation of an ethyl group, with corresponding C—C—N—C torsion angles of 86.6 (3)° for one mol­ecule and 79.6 (3)° for the other mol­ecule. In the crystal, mol­ecules are linked by weak C—H⋯O hydrogen bonds, forming a three-dimensional supra­molecular network.