Acta Cryst. (2005). E61, o3264-o3265  [ doi:10.1107/S1600536805026656 ]

3-Methyl-1-phenyl-4-[(Z)-phenyl(p-tolylamino)methylene]-1H-pyrazol-5(4H)-one

R.-M. Ma

Abstract: The NH unit on the exocyclic C=C double bond in the title compound, C₂₄H₂₁N₃O, which is on the same side of the double bond as the C=O unit of the pyrazolone ring, interacts with the carbonyl group through an intramolecular N-HO hydrogen bond [2.685 (2) Å].

Online 17 September 2005

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