Structural clues to UO<sub>2</sub><sup>2+</sup>/VO<sub>2</sub><sup>+</sup>competition in seawater extraction using amidoxime-based extractants
Steven P. KelleyCenter for Green Manufacturing and Department of Chemistry, The University of Alabama, Tuscaloosa, AL, 35487, USA. [email protected]Patrick S. BarberCenter for Green Manufacturing and Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USAPeter H. K. MullinsCenter for Green Manufacturing and Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USARobin D. RogersCenter for Green Manufacturing and Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
2014en
ABI
Аннотация
Here we present the first structural comparison of amidoxime complexes of UO2(2+) and VO2(+) (the main competitor in the extraction of uranium from seawater using amidoxime-based sorbents) using a 4,5-di(amidoxime)-functionalized imidazole ligand. The amidoxime groups resist tautomerization in both cases and quite different coordination modes (chelating vs. bridging) are observed.
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