Uranium Hydridoborates: Synthesis, Magnetism, and X-ray/Neutron Diffraction Structures

H. Braunschweig, A. Gackstatter, T. Kupfer, K. Radacki, S. Franke, K. Meyer, K Fucke, M.H. Lemee-Cailleau

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Abstract

While uranium hydridoborate complexes containing the [BH4](-) moiety have been well-known in the literature for many years, species with functionalized borate centers remained considerably rare. We were now able to prepare several uranium hydridoborates (1-4) with amino-substituted borate moieties with high selectivity by smooth reaction of [Cp*2UMe2] (Cp* = C5Me5) and [Cp'2UMe2] (Cp' = 1,2,4-tBu3C5H2) with the aminoborane H2BN(SiMe3)2. A combination of nuclear magnetic resonance spectroscopy, deuteration experiments, magnetic SQUID measurements, and X-ray/neutron diffraction studies was used to verify the anticipated molecular structures and oxidation states of 1-4 and helped to establish a linear tridentate coordination mode of the borate anions.
Original languageEnglish
Pages (from-to)8022-8028
JournalInorganic Chemistry
Volume54
Issue number16
Early online date06 Aug 2015
DOIs
Publication statusPublished - 17 Aug 2015

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    Braunschweig, H., Gackstatter, A., Kupfer, T., Radacki, K., Franke, S., Meyer, K., Fucke, K., & Lemee-Cailleau, M. H. (2015). Uranium Hydridoborates: Synthesis, Magnetism, and X-ray/Neutron Diffraction Structures. Inorganic Chemistry, 54(16), 8022-8028. https://doi.org/10.1021/acs.inorgchem.5b01205