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Incorporation of neptunium(VI) into a uranyl selenite
Nathan A Meredith1, Matthew J Polinski, Jian Lin
1Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, USA.
Abstract:
The incorporation of neptunium(VI) into the layered uranyl selenite Cs[(UO(2))(HSeO(3))(SeO(3))] has yielded the highest level of neptunium uptake in a uranyl compound to date with an average of 12(±3)% substitution of Np(VI) for U(VI). Furthermore, this is the first case in nearly 2 decades of dedicated incorporation studies in which the oxidation state of neptunium has been determined spectroscopically in a doped uranyl compound and also the first time in which neptunium incorporation has resulted in a structural transformation.
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