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Parabolic relationship between free energies of comformational and isomerizational equilibria and the polarity of solvents

✍ Scribed by Nikolai S. Zefirov; Vyacheslav V. Samoshin

Publisher
Elsevier Science
Year
1981
Tongue
French
Weight
246 KB
Volume
22
Category
Article
ISSN
0040-4039

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✦ Synopsis

The empirical parabolic function is devised for the determination ofAGo values in the solvents of various polarity and in vapour phase. Numerous investigations have shown that the solvent effect on conformational equilibria is often much more important than the intramolecular interactions lv2. Hence the vapour phase energy difference between two conformers,AGt, should be used to evaluate intramolecular factors dominating conformational equilibria. However the direct experimental determination of AG: values meets with essential technical difficulties 193 . Several approaches are known for the estimation of these values. For example, a simple linear extrapolation of AGEol values vs. a function (&-1)/(2~ + 1).a3 (where a is the solvent

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The analysis of solvation in ionic liqui
The analysis of solvation in ionic liquids and organic solvents using the Abraham linear free energy relationship
✍ William E Acree; Jr; Michael H Abraham πŸ“‚ Article πŸ“… 2006 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 114 KB

## Abstract The contentions made in an earlier paper [__J Chem Technol Biotechnol__ **80**: 133–137 (2005)] that the coefficients of the Abraham solvation equation do not provide meaningful information on the molecular properties of ionic liquid solvents is refuted. The objections noted in the earl