N,N'-Diethyl-N,N'-diphenyl-pyridine-2,6-dicarboxamide

• Published in: Acta crystallographica. Section E, Structure reports online Vol. 68; no. Pt 4; pp. o1099 - o1100
• Main Authors: Klepetářová, Blanka, Makrlík, Emanuel, Babain, Vasily A, Kašička, Václav
• Format: Journal Article
• Language: English
• Published: United States International Union of Crystallography 01.04.2012
• Subjects: Organic Papers
• ISSN: 1600-5368
• DOI: 10.1107/S1600536812009026

The asymmetric unit of the title compound, C(23)H(23)N(3)O(2), contains two mol-ecules 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 mol-ecules, as reflected in the N(pyridine)-C-C-N(amide) torsion angles of -44.9 (3) and 136.0 (2)° for one mol-ecule and 43.5 (3) and -131.1 (2)° for the other mol-ecule. However, the two mol-ecules show significant differences in the orientation of an ethyl group, with corresponding C-C-N-C torsion angles of 86.6 (3)° for one mol-ecule and 79.6 (3)° for the other mol-ecule. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular network.