Premium
The [U 2 F 12 ] 2− Anion of Sr[U 2 F 12 ]
Author(s) -
Scheibe Benjamin,
Pietzonka Clemens,
Mustonen Otto,
Karppinen Maarit,
Karttunen Antti J.,
Atanasov Mihail,
Neese Frank,
Conrad Matthias,
Kraus Florian
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201800743
Subject(s) - antiferromagnetism , crystallography , raman spectroscopy , anhydrous , ion , chemistry , solid hydrogen , crystal structure , spectroscopy , infrared spectroscopy , hydrogen fluoride , hydrogen , inorganic chemistry , physics , condensed matter physics , organic chemistry , quantum mechanics , optics
The D 2 h ‐symmetric dinuclear complex anion [U 2 F 12 ] 2− of pastel green Sr[U 2 F 12 ] shows a hitherto unknown structural feature: The coordination polyhedra around the U atoms are edge‐linked monocapped trigonal prisms, the U V atoms are therefore seven‐coordinated. This leads to a U–U distance of 3.8913(6) Å. A weak U V –U V interaction is observed for the dinuclear [U 2 F 12 ] 2− complex and described by the antiferromagnetic exchange J exp of circa −29.9 cm −1 . The crystalline compound can be easily prepared from SrF 2 and β‐UF 5 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.