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Article Dans Une Revue Inorganic Chemistry Année : 2005

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

C. Le Naour
C. Fillaux
  • Fonction : Auteur
C. den Auwer
P. Moisy
  • Fonction : Auteur
C. Hennig
  • Fonction : Auteur

Résumé

The present work describes the first structural studies of protactinium(V) in sulfuric and hydrofluoric acid media using X-ray absorption spectroscopy. The results show unambiguously the absence of the trans-dioxo bond that characterizes the other early actinide elements such as U and Np. In concentrated sulfuric acid (13 M), Pa(V) is proved to exhibit a single oxo bond as postulated in the literature for species in more dilute media. In a 0.5 M HF medium, XANES and EXAFS spectra indicate the absence of any oxo bond: Pa(V) exists in the form of a pure fluoro complex.

Dates et versions

in2p3-00025340 , version 1 (10-01-2006)

Identifiants

Citer

C. Le Naour, D. Trubert, M.V. Di Giandomenico, C. Fillaux, C. den Auwer, et al.. First Structural Characterization of a Protactinium(V) Single Oxo Bond in Aqueous Media. Inorganic Chemistry, 2005, 44, pp.9542-9546. ⟨10.1021/ic0512330⟩. ⟨in2p3-00025340⟩
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