Contribution to the thermodynamics of complexes of alkali metal cations with hexaethyl p-tert-butylcalix[6]arene hexaacetate in the water-nitrobenzene extraction system

被引：15

作者：

Makrlik, E. ^{[1
]}

Vanura, P. ^{[2
]}

Budka, J. ^{[2
]}

机构：

[1] Univ W Bohemia, Fac Sci Appl, Plzen 30614, Czech Republic

[2] Prague Inst Chem Technol, CR-16628 Prague 6, Czech Republic

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2008年 / 275卷 / 02期

关键词：

D O I：

10.1007/s10967-007-7065-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

From extraction experiments and gamma-activity measurements, the exchange extraction constants corresponding to the general equilibrium M+(aq)+CsL+(nb)double left right arrow ML+(nb)+Cs+(aq) taking place in the two-phase water-nitrobenzene system (M+ = Li+, Na+, K+, Rb+; L = hexaethyl p-tert-butylcalix[6]arene hexaacetate; aq = aqueous phase, nb = nitrobenzene phase) were determined. Moreover, the stability constants of the ML+ complexes in water saturated nitrobenzene were calculated; they were found to increase in the cation order Rb+<Cs+<K+<Na+<Li+.

引用

页码：463 / 466

页数：4

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