4-{[2-(2,4-Dinitrophenyl)hydrazinylidene](phenyl)methyl}-5-methyl-2-phenyl-1H-pyrazol-3(2H)-one ethanol monosolvate

Abstract

In the title compound, C23H18N6O5·C2H6O, all three benzene rings lie in an approximate plane [maximum deviation = 0.2688 (16) Å] that makes an angle of 53.56 (3)° with the plane of the pyrazolone ring. Intramolecular N—H...O hydrogen bonds occur. In the crystal, the ethanol solvent molecule links adjacent molecules through N—H...O—H...O hydrogen bonds, leading to an infinite chain along the c-axis direction. The ethyl group of the ethanol solvent molecule is disordered over two set of sites in a 0.762 (5):0.238 (5) ratio.