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3-Methyl-1-phenyl-4-[phenyl(8-quinolylamino)methylene]pyrazol-5(4H)-one

✍ Scribed by Sun, Yi-Feng ;Li, Ji-Kun ;Wu, Ren-Tao ;Zheng, Ze-Bao

Publisher
International Union of Crystallography
Year
2007
Tongue
English
Weight
128 KB
Volume
63
Category
Article
ISSN
1600-5368

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The structure of the title compound, C 25 H 23 N 3 O 2 , features a central pyrazole ring; an amine NH unit interacts with the ring CO unit through an intramolecular N-HÁ Á ÁO hydrogen bond [NÁ Á ÁO = 2.700 (2) A ˚]

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In the title compound, C 24 H 18 F 3 N 3 O, the molecule exists in the enamine-keto tautomeric form. The pyrazolone ring makes dihedral angles of 31.8 (2), 45.4 (2) and 71.2 (2) with the 1-phenyl, aniline and methylene-bound phenyl rings, respectively. An intramolecular N-HÁ Á ÁO hydrogen bond helps

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The NH unit on the exocyclic C C double bond in the title compound, C 24 H 21 N 3 O, 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-HÁ Á ÁO hydrogen bond [2.685 (2) A ˚].