Abstract
The title compound, C20H19N3O, exists in a keto–enamine tautomeric form. The pyrazolone ring makes dihedral angles of 20.52 (10) and 77.73 (5)° with the two phenyl rings and an intramolecular N—H⋯O hydrogen bond occurs. A weak intermolecular C—H⋯O hydrogen bond is observed in the crystal structure. The allyl group is disordered over two positions, with site-occupancy factors of 0.533 (5) and 0.467 (5).
Highlights
Data collectionH atoms treated by a mixture of independent and constrained refinement max = 0.17 e Å3
The title compound, C20H19N3O, exists in a keto–enamine tautomeric form
H atoms treated by a mixture of independent and constrained refinement max = 0.17 e Å3
Summary
H atoms treated by a mixture of independent and constrained refinement max = 0.17 e Å3. Key indicators: single-crystal X-ray study; T = 293 K; mean (C–C) = 0.003 Å; disorder in main residue; R factor = 0.047; wR factor = 0.133; data-to-parameter ratio = 16.2. The title compound, C20H19N3O, exists in a keto–enamine tautomeric form. The pyrazolone ring makes dihedral angles of 20.52 (10) and 77.73 (5) with the two phenyl rings and an intramolecular N—H O hydrogen bond occurs. A weak intermolecular C—H O hydrogen bond is observed in the crystal structure. The allyl group is disordered over two positions, with site-occupancy factors of 0.533 (5) and
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
