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http://hdl.handle.net/2445/154807
Title: | [UF6](2-): A molecular hexafluorido actinide(IV) complex with compensating spin and orbital magnetic moments |
Author: | Pedersen, Kasper S. Meihaus, Katie R. Rogalev, Andrei Wilhelm, Fabrice Aravena Ponce, Daniel Alejandro Amoza Dávila, Martín Ruiz Sabín, Eliseo Long, Jeffrey R. Bendix, Jesper Clérac, Rodolphe |
Keywords: | Metalls de terres rares Imants Urani Espectroscòpia de raigs X Rare earth metals Magnets Uranium X-ray spectroscopy |
Issue Date: | 7-Aug-2019 |
Publisher: | Wiley-VCH |
Abstract: | The first structurally characterized hexafluorido complex of a tetravalent actinide ion, the [UF6]2- anion, is reported in the (NEt4)2[UF6]2H2O salt (1). The weak magnetic response of 1 results from both U(IV) spin and orbital contributions, as established by combining X-ray magnetic circular dichroism (XMCD) spectroscopy and bulk magnetization measurements. The spin and orbital moments are virtually identical in magnitude, but opposite in sign, resulting in an almost perfect cancellation, which is corroborated by ab initio calculations. This work constitutes the first experimental demonstration of a seemingly non-magnetic molecular actinide complex carrying sizable spin and orbital magnetic moments. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1002/anie.201905056 |
It is part of: | Angewandte Chemie-International Edition, 2019, vol. 58, num. 44, p. 15650-15654 |
URI: | http://hdl.handle.net/2445/154807 |
Related resource: | https://doi.org/10.1002/anie.201905056 |
ISSN: | 1433-7851 |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) |
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