3‐[(2,3‐Diphenylquinoxalin‐5‐ylamino)methylene]pentane‐2,4‐dione

3‐[(2,3‐Diphenylquinoxalin‐5‐ylamino)methylene]pentane‐2,4‐dione

In the title compound, C26H21N3O2, the enaminone portion of the molecule is almost exactly planar owing to strong conjugation across the ethylene double bond and is inclined at an angle of 20.8 (1)° to the mean plane of the quinoxaline heterocycle. The molecule has an intramolecular hydrogen bond be...

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Veröffentlicht in:Acta crystallographica. Section E, Structure reports online Structure reports online, 2007-06, Vol.63 (6), p.o3005-o3006
Hauptverfasser: Kettmann, Viktor, Lokaj, Jan, Milata, Viktor, Saloň, Jozef, Čepan, Michal, Kožíšek, Jozef
Format: Artikel
Sprache:eng
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Zusammenfassung:In the title compound, C26H21N3O2, the enaminone portion of the molecule is almost exactly planar owing to strong conjugation across the ethylene double bond and is inclined at an angle of 20.8 (1)° to the mean plane of the quinoxaline heterocycle. The molecule has an intramolecular hydrogen bond between the NH and CO groups in the Z configuration, adopting the chelated form. The phenyl rings are twisted by ca 46° from the heterocyclic plane.
ISSN:1600-5368
1600-5368
DOI:10.1107/S1600536807023331