Riedel, R;
Seel, AG;
Malko, D;
Miller, DP;
Sperling, BT;
Choi, H;
Headen, TF;
... Barrett, AGM; + view all
(2021)
Superalkali-Alkalide Interactions and Ion Pairing in Low-Polarity Solvents.
Journal of the American Chemical Society
, 143
(10)
pp. 3934-3943.
10.1021/jacs.1c00115.
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Abstract
The nature of anionic alkali metals in solution is traditionally thought to be "gaslike" and unperturbed. In contrast to this noninteracting picture, we present experimental and computational data herein that support ion pairing in alkalide solutions. Concentration dependent ionic conductivity, dielectric spectroscopy, and neutron scattering results are consistent with the presence of superalkali-alkalide ion pairs in solution, whose stability and properties have been further investigated by DFT calculations. Our temperature dependent alkali metal NMR measurements reveal that the dynamics of the alkalide species is both reversible and thermally activated suggesting a complicated exchange process for the ion paired species. The results of this study go beyond a picture of alkalides being a "gaslike" anion in solution and highlight the significance of the interaction of the alkalide with its complex countercation (superalkali).
| Type: | Article |
|---|---|
| Title: | Superalkali-Alkalide Interactions and Ion Pairing in Low-Polarity Solvents |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/jacs.1c00115 |
| Publisher version: | http://dx.doi.org/10.1021/jacs.1c00115 |
| Language: | English |
| Additional information: | Copyright © 2021 The Authors. Published by American Chemical Society. This article is published under a Creative Commons Attribution 4.0 International (CC BY 4.0) |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10125023 |
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