Thermodynamics of complexation of cesium ions with dibenzo-18-crown-6 in hydrophobic ionic liquids

被引：4

作者：

Vendilo, A. G. ^{[1
]}

Dzhigailo, D. I. ^{[2
]}

Pletnev, I. V. ^{[2
]}

Popov, K. I. ^{[1
,3
]}

Torocheshnikova, I. I. ^{[2
]}

机构：

[1] State Sci Res Inst Chem Reagents & Special Pur Su, Moscow 107076, Russia

[2] Moscow MV Lomonosov State Univ, Moscow 119992, Russia

[3] Moscow State Univ Food Ind, Moscow 125080, Russia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2011年 / 56卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

ALKALI-METAL IONS; STABILITY-CONSTANTS; EXTRACTION; WATER;

D O I：

10.1134/S0036023611060246

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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 27-57A degrees 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 (Cs) (DB18C6) for the cesium extraction from an aqueous solution into the RTIL.

引用

页码：954 / 960

页数：7

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