Issue 12, 2002
From the journal:

Journal of the Chemical Society, Perkin Transactions 2

Effect of upper rim para-alkyl substituents on extraction of alkali and alkaline earth metalcations by di-ionizable calix[4]arenes

Galina G. Talanova,†a   Vladimir S. Talanov,a   Maryna G. Gorbunova,a   Hong-Sik Hwanga  and  Richard A. Bartsch*a  

* Corresponding authors

a Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA
E-mail: richard.bartsch@ttu.edu
Fax: +1(806) 742 1289

Abstract

A series of new di-ionizable calix[4]arene N-(X-sulfonyl)carboxamides (X = CF3, Me, Ph and C6H4-4-NO2) and carboxylic acids with partially and completely removed upper rim p-tert-butyl groups was synthesized and utilized for competitive solvent extractions of alkali and alkaline earth metal cations. Removal of the para-alkyl substituents changes significantly both the efficiency and selectivity of metal ion separations by the carboxamide calix[4]arene extractants, while no such effect is observed for corresponding carboxylic acids.

Graphical abstract: Effect of upper rim para-alkyl substituents on extraction of alkali and alkaline earth metal cations by di-ionizable calix[4]arenes

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Article information

DOI
https://doi.org/10.1039/B207301C
Article type
Paper
Submitted
25 Jul 2002
Accepted
08 Nov 2002
First published
22 Nov 2002

J. Chem. Soc., Perkin Trans. 2, 2002, 2072-2077

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Effect of upper rim para-alkyl substituents on extraction of alkali and alkaline earth metal cations by di-ionizable calix[4]arenes

G. G. Talanova, V. S. Talanov, M. G. Gorbunova, H. Hwang and R. A. Bartsch, J. Chem. Soc., Perkin Trans. 2, 2002, 2072 DOI: 10.1039/B207301C

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