Gas chromatographic study of the solution thermodynamics of organic solutes in tetraalkylammonium alkanesulfonate and perfluoroalkanesulfonate solvents

✍ Scribed by Rena M. Pomaville; Coline F. Poole

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 738 KB
• Volume: 499
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(00)97017-1

✦ Synopsis

The partial molar Gibbs free energy, enthalpy, and entropy of solution for a number of test solutes are determined in five pairs of tetraalkylammonium alkanesulfonate and perfluoroalkanesulfonate salts that are liquid at 121°C. The presence of fluorine is shown to reduce retention due to dispersive interactions, to have little influence on orientation and electron-donor interactions, and to have a large influence on protondonor interactions. These properties are correlated with the weak dispersive interactions characteristic of highly fluorinated solvents and the inductive effect of fluorine which affects the electron density on the sulfonate group.