13C NMR spectra and enol—enol tautomerism in crystalline keto—enols

Autor:	A.A. Elkin, A.I. Kol'tsov, Donka Kh. Zheglova
Rok vydání:	1990
Předmět:	Magic angle Hydrogen bond Chemistry Stereochemistry Organic Chemistry Intermolecular force Protonation Nuclear magnetic resonance spectroscopy Carbon-13 NMR Enol Tautomer Analytical Chemistry Inorganic Chemistry Crystallography chemistry.chemical_compound Spectroscopy
Zdroj:	Journal of Molecular Structure. 221:309-313
ISSN:	0022-2860
DOI:	10.1016/0022-2860(90)80415-g
Popis:	The tautomeric equilibrium in crystals of five β-diketones has been studied by 13 C NMR spectroscopy using “magic angle” spinning techniques. The results are compared with literature data for the corresponding 10% solutions. The difference between chelate enol—enol equilibria in crystalline and dissolved keto—enols was found to be small in some cases and significant for systems containing an additional proton donating group able to form an intermolecular hydrogen bond.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::88a5f7d88171a9527931cb63c7009d7d https://doi.org/10.1016/0022-2860(90)80415-g Zobrazit plný text záznamu