Contribution to the Complexation of some Univalent Metal Cations with p-Tert-Butylcalix[4]arene-Tetrakis(N,N-Diethylacetamide) in Nitrobenzene Saturated with Water

Emanuel Makrlík; J. Budka; Petr Vaňura

doi:10.1524/zpch.2011.0064

Published by De Gruyter (O) January 18, 2011

Contribution to the Complexation of some Univalent Metal Cations with p-Tert-Butylcalix[4]arene-Tetrakis(N,N-Diethylacetamide) in Nitrobenzene Saturated with Water

Emanuel Makrlík , J. Budka and Petr Vaňura

From the journal Zeitschrift für Physikalische Chemie

https://doi.org/10.1524/zpch.2011.0064

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Abstract

From extraction experiments and γ-activity measurements, the exchange extraction constants corresponding to the general equilibrium M⁺(aq)+NaL⁺(nb)⇔ML⁺(nb)+Na⁺(aq) taking place in the two-phase water-nitrobenzene system (M⁺=Li⁺, Ag⁺, Rb⁺, Tl⁺, Cs⁺; L=p-tert-butylcalix[4]arene-tetrakis(N,N-diethylacetamide); 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 Cs⁺ < Rb⁺ < Tl⁺ < Ag⁺ < Li⁺.

Keywords: Univalent Cations; Calix[4]arene Compound; Extraction and Stability Constants; Water-Nitrobenzene System

^* Correspondence address: University of West Bohemia, Faculty of Applied Sciences, Husova 11, 306 14 Pilsen, Tschechische Republik, Makrlik@centrum.cz

Published Online: 2011-1-18

Published in Print: 2011-2-1

Contribution to the Complexation of some Univalent Metal Cations with p-Tert-Butylcalix[4]arene-Tetrakis(N,N-Diethylacetamide) in Nitrobenzene Saturated with Water

Abstract

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