Flux growth of flourides of lithium and thorium or uranium

Actinide Fluorides Study of LiF-AF4 (A = Th, U, Np, Pu) Systems

“…Both are isostructural with the uranium and thorium complexes for which Single crystals have been recently studied [8].…”

Stabilization of Th3+ ions into mixed-valence thorium fluoride

“…1 H and 7 Li nuclear magnetic resonance will be then discussed to explain the different compositions successively reported in the literature for the same compounds, i.e. ''LiTh 4 F 17 '' and Th 6 F 24 Á H 2 O [22,23].…”

“…In the present paper, this study is extended to the LiF-MF 4 (M¼Ce and Th) binary systems. These compounds have been initially formulated as LiM 4 F 17 [20][21][22][23], but the structural characterizations [22,23] underline an ambiguity about their real stoichiometry. In a first step, X-ray diffraction data of thorium and cerium compounds will be investigated to underline their isostructural feature.…”

“…The initial stoichiometry ''LiCe 4 F 17 '' [20][21][22][23] has been corrected to Li 5.5 Ce 12 F 50 using X-ray diffraction, 7 Li nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS) data. In the present paper, this study is extended to the LiF-MF 4 (M¼Ce and Th) binary systems.…”

Examination of Molten Salt Reactor Relevant Elements Using Hydrothermal Synthesis

“…In high fluoride environments, it is expected that Be 2+ will exist as the [BeF 4 ] 2– ion. However, in the case of the early actinides (Th, U, Np, and Pu), several different solid-state structures can be obtained of the form [AnF 4+ n ] n − ( n = 0–4) and are sensitive to stoichiometry and conditions. − ,− Most studies have relied on powder X-ray diffraction for analysis, particularly for transuranium elements. − Because of the environmental hazard of Be, it is important to determine if Be can cocrystallize with [AnF x ] n − .…”