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Updated: Sep 16, 2025

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
Published on: November 9, 2015
Isolation of a new polyoxometalate complex of plutonium
Ian Colliard1, Vitalie Stavila2, Gauthier J-P Deblonde1
1Lawrence Livermore National Laboratory, Livermore, CA 94550, USA. Deblonde1@LLNL.gov.
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We report the synthesis, plus structural and spectroscopic characterization, of a plutonium(IV) complex with the polyoxometalate W5O186-. The complex was isolated as Cs8[Pu(W5O18)2]·CsCl·6.5H2O, with the tetravalent actinide cation sandwiched between two lacunary polyoxotungstate anions. It represents a rare case of a POM compound with plutonium and also the first Peacock-Weakley type complex of plutonium.
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