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Mutual influence of two intramolecular hydrogen bonds in 1,3,5-triketones

✍ Scribed by D.Kh. Zheglova; I.K. Kavrakova; A.I. Kol'tsov; Yu.A. Ustynyuk

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
353 KB
Volume
195
Category
Article
ISSN
0022-2860

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✍ 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=