Abstract
The title compound, C18H16N2O, crystallizes in the triclinic space group P1, with four independent molecules in the asymmetric unit wherein two molecules have an irregular -ac, -ac, +ap conformation (ap, antiperiplanar; ac, anticlinal), while the other molecules exhibit a different, +ac, +ac, +ap conformation. The planar (r.m.s. deviation = 0.006 Å in each of the four molecules) quinoline ring systems of the four molecules are oriented at dihedral angles of 32.8 (2), 33.4 (2), 31.7 (2) and 32.3 (2)° with respect to the benzene rings. Intramolecular N—H⋯N interactions occur in all four independent molecules. The crystal packing is stabilized by intermolecular N—H⋯O and C—H⋯O hydrogen bonds, and are further consolidated by C—H⋯π and π–π stacking interactions [centroid–centroid distances = 3.728 (3), 3.722 (3), 3.758 (3) and 3.705 (3) Å].
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More From: Acta Crystallographica Section E Structure Reports Online
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