Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 8 (August 2013)


organic compounds



rz5080 scheme

Acta Cryst. (2013). E69, o1320-o1321    [ doi:10.1107/S1600536813020035 ]

N'-Phenyl-N'-[3-(2,4,5-triphenyl-2,5-dihydro-1H-pyrazol-3-yl)quinoxalin-2-yl]benzohydrazide

Y. Ramli, K. Karrouchi, E. M. Essassi and L. El Ammari

Abstract: The molecule of the title compound, C42H32N6O, is built up from one pyrazole ring linked to three phenyl rings and to an approximately planar [maximum deviation = 0.0455 (15) Å] quinoxaline system connected to a phenylbenzohydrazide group. The pyrazole ring assumes an envelope conformation, the C atom attached to the quinoxalin-3-yl ring system being the flap atom. The dihedral angle between the two phenyl rings of the phenylbenzohydrazide group is of 58.27 (9)°. The mean plane through the pyrazole ring is nearly perpendicular to the quinoxaline ring system and to the phenyl ring attached to the opposite side, forming dihedral angles of 82.58 (7) and 87.29 (9)°, respectively. An intramolecular C-H...O hydrogen bond is present. In the crystal, molecules are linked by pairs of N-H...N hydrogen bonds, forming inversion dimers, which are further connected by C-H...N hydrogen bonds into chains parallel to the b axis.


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