The [U2F12]2- Anion of Sr[U2F12]

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2018-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
2914-2918
Series
ANGEWANDTE CHEMIE, Volume 57, issue 11
Abstract
The D2h-symmetric dinuclear complex anion [U2F12]2- of pastel green Sr[U2F12] shows a hitherto unknown structural feature: The coordination polyhedra around the U atoms are edge-linked monocapped trigonal prisms, the UV atoms are therefore seven-coordinated. This leads to a U-U distance of 3.8913(6)Å. A weak UV-UV interaction is observed for the dinuclear [U2F12]2- complex and described by the antiferromagnetic exchange Jexp of circa -29.9cm-1. The crystalline compound can be easily prepared from SrF2 and β-UF5 in anhydrous hydrogen fluoride (aHF) at room temperature. It was studied by means of single crystal X-ray diffraction, IR, Raman and UV/VIS spectroscopy, magnetic measurements, and by molecular as well as by solid-state quantum chemical calculations.
Description
Keywords
Fluorine, Hexafluoridouranate(V), Magnetic properties, Quantum chemical calculations, Uranium
Other note
Citation
Scheibe , B , Pietzonka , C , Mustonen , O , Karppinen , M , Karttunen , A J , Atanasov , M , Neese , F , Conrad , M & Kraus , F 2018 , ' The [U 2 F 12 ] 2- Anion of Sr[U 2 F 12 ] ' , Angewandte Chemie , vol. 57 , no. 11 , pp. 2914-2918 . https://doi.org/10.1002/anie.201800743