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Hydration Properties and Ionic Radii of Actinide(III) Ions in Aqueous Solution

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journal contribution
posted on 16.09.2013, 00:00 by Paola D’Angelo, Fausto Martelli, Riccardo Spezia, Adriano Filipponi, Melissa A. Denecke
Ionic radii of actinide­(III) cations (from U­(III) to Cf­(III)) in aqueous solution have been derived for the first time starting from accurate experimental determination of the ion–water distances obtained by combining extended X-ray absorption fine structure (EXAFS) results and molecular dynamics (MD) structural data. A strong analogy has been found between the lanthanide and actinide series concerning hydration properties. The existence of a contraction of the An–O distance along the series has been highlighted, while no decrease of the hydration number is evident up to Cf­(III).