EFFECT OF FLUORINE SUBSTITUTION, PRESSURE AND TEMPERATURE ON THE TAUTOMERIC EQUILIBRIA OF ACETYLACETONATE BETA-DIKETONES

Authors
WALLEN SL YONKER CR PHELPS CL WAI CM
Citation
Sl. Wallen et al., EFFECT OF FLUORINE SUBSTITUTION, PRESSURE AND TEMPERATURE ON THE TAUTOMERIC EQUILIBRIA OF ACETYLACETONATE BETA-DIKETONES, Journal of the Chemical Society. Faraday transactions, 93(14), 1997, pp. 2391-2394
Citations number
20
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Journal of the Chemical Society. Faraday transactions → ACNP
ISSN journal
09565000
Volume
93
Issue
14
Year of publication
1997
Pages
2391 - 2394
Database
ISI
SICI code
0956-5000(1997)93:14<2391:EOFSPA>2.0.ZU;2-R
Abstract
The equilibrium between the keto and enol tautomers of acetylacetone, trifluoroacetylacetone and hexafluoroacetylacetone in the neat liquid slate and dissolved in supercritical fluid carbon dioxide have been st udied, as a function of pressure and temperature, by H-1 NMR. This all ows determination of the thermodynamic parameters, Delta H and AS, for the keto-enol equilibrium. The observed trends are well correlated wi th extraction results for this class of compounds.