N-{1,2-Bis(pyridin-3-yl)-2-[(E)-(pyridin-3-yl)methyl-idene-amino]-eth-yl}nicotinamide

Abstract

In the title compound, C24H20N6O, the pyridin-3-yl groups on the ethyl-ene fragment are found in a trans conformation with a C(py)-C(e)-C(e)-C(py) (py = pyridine, e = ethylene) torsion angle of 179.2 (3)°. The dihedral angle between the pyridine rings is 3.5 (1)°. In the crystal, N-H⋯N and C-H⋯O=C inter-actions form a layer arrangement parallel to the bc plane. The compound displays disorder of the ethyl-ene fragment over two positions with an occupancy ratio of 0.676 (7) to 0.324 (7) that extends into the amide section of the nicotinamide moiety.

Fig. 1.

The molecular structure of the title compound I with displacement ellipsoids at the 50% probability. The minor fraction of the disorder was omitted.

Fig. 2.

Representation of hydrogen bonds (N—H···N and C—H···O=C) found in the structure of the title compound. The hydrogen atoms not involved in the hydrogen bond interactions were omitted.

Fig. 3.

The major and minor component of the disorder of compound I, dashed lines indicate the minor fraction. The displacement ellipsoids are at the 50% probability.