Thermodynamics of complexation of cesium ions with dibenzo-18-crown-6 in hydrophobic ionic liquids |
| |
| Authors: | A. G. Vendilo D. I. Dzhigailo I. V. Pletnev K. I. Popov I. I. Torocheshnikova |
| |
| Affiliation: | 1.State Scientific Research Institute of Chemical Reagents and Special-Purity Substances (IREA),Moscow,Russia;2.Moscow State University,Moscow,Russia;3.Moscow State University of Food Industry,Moscow,Russia |
| |
| Abstract: | The stability constants of the [Cs(DB18C6)]+ complex (DB18C6 is dibenzo-18-crown-6, L) in hydrophobic ionic liquids (room-temperature ionic liquids, RTIL) trioctylmethylammonium salicylate ([TOMA][Sal]), tetrahexylammnoium dihexylsulfosuccinate ([THA][DHSS]), and 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([BMIM][N(Tf)2], as well as of the [Cs(18C6)2]+ complex in [BMIM][N(Tf)2], were measured by 133Cs NMR in the temperature range 27–57°C. The changes in the enthalpy and entropy of complex formation were determined. A linear correlation was revealed between logK 1 and the extraction factor logD CsDB18C6 for the cesium extraction from an aqueous solution into the RTIL. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
