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- Title
STABILITY OF THE NONACTIN-K<sup>+</sup> COMPLEX IN APROTIC MEDIA.
- Authors
Filipek, Slawomir; Kalinowski, Marek K.
- Abstract
Complexation of potassium ions by nonactin was studied by cyclic voltammetry in several non-proton-donating media. It was found that the stability constants, Ks, are strongly influenced by the solvents, and the corresponding logKs values vary inversely with the Guttmann donicity scale. Based on the results of a simulated annealing procedure, the possible structure of the complex with regard to the molecules of acetonitrile microsolvating the bound cation is proposed. Accordingly, there are four carbonyl oxygens, two ether oxygens and two acetonitrile nitrogens coordinating the potassium cation and this results in a net coordination number of eight.
- Publication
Main Group Metal Chemistry, 1999, Vol 22, Issue 9, p567
- ISSN
0792-1241
- Publication type
Article