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First Structural Characterization of a Protactinium(V) Single Oxo Bond in Aqueous Media

Le Naour, C.; Trubert, D.; Di Giandomenico, V. M.; Fillaux, C.; Den Auwer, C.; Moisy, P.; Hennig, C.
We report here the first structural characterization of Pa(V) adducts in concentrated sulfuric and hydrofluoric solutions. In sulfuric medium, X ray Absorption Spectroscopic data show that unlike the other early actinide elements as uranium or neptunium, protactinium doesn’t form a transdioxo cation but a monooxo adduct. In contrast, concentrated hydrofluoric medium precludes the formation of any oxo bond.


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Publ.-Id: 7608