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Keto and Enol Tautomers of 4-Benzoyl-3-methyl-1-phenyl-5(2H)-pyrazolone

✍ Scribed by Akama, Y. ;Shiro, M. ;Ueda, T. ;Kajitani, M.

Book ID
114511405
Publisher
International Union of Crystallography
Year
1995
Tongue
English
Weight
534 KB
Volume
51
Category
Article
ISSN
0108-2701

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πŸ“œ SIMILAR VOLUMES

Spectroscopic Studies of the Keto and En
Spectroscopic Studies of the Keto and Enol Tautomers of 1-Phenyl-3-Methyl-4-Benzoyl-5-Pyrazolone
✍ Yoshifumi Akama; Aijun Tong πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 100 KB

Molecular structures of the two tautomers of a ␀-diketone 1-phenyl-3-methyl-4-benzoyl-5pyrazolone (PMBP) were studied by MS, UV, IR, and X-ray diffraction methods. The mass spectra show little difference for the two forms of PMBP, while there are notable differences in the IR spectra as KBr pellets

Spectroscopic proof for intermolecular o
Spectroscopic proof for intermolecular or intramolecular hydrogen bonds in ketoξ—Έenol tautomers of 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone
✍ Toyotoshi Ueda; Yoshifumi Akama πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 369 KB

The broad infrared bands of the polymorphic crystals of I-phenyl-3-methyl-4-benzoyl+pyrazolone (PMBP) were assigned unequivocally by examining the IR spectra of solutions and Raman spectra. The strong band at 2550 cm-' of a colourless crystal was attributed to an intermolecular hydrogen bond NH...O=