Influence of structural changes on the ion selectivities of magnesium ionophores based on malonic acid diamides |
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| Authors: | James O'Donnell Bruno Rusterholz Barbara Aebersold Denise Rüegg Wilhelm Simon Ernö Pretsch |
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| Institution: | (1) Department of Organic Chemistry, Swiss Federal Institute of Technology (ETH), Universitätsstrasse 16, CH-8092 Zürich, Switzerland |
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| Abstract: | In an investigation of octamethylene bis(malonic acid diamides) and their selectivities for magnesium, it was found that presence of secondary amides within the particular ionophore played a considerable role in the enhancement of magnesium selectivity. Similar effects in other ionophores, i.e. tris(malonic acid diamides), were thus systematically looked at with the help of selectivity measurements with the hope of optimizing the number of secondary and tertiary amides so as to improve the magnesium selectivity. The syntheses of several investigated tris(malonic acid diamide) isologues are equally reported.Deceased in November 1992 |
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| Keywords: | ion-selective electrodes ionophores magnesium |
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