Oxide inside: The structure of a plutonium(IV) oxide nanoparticle (see picture; Pu green, O red and blue, Cl yellow) has been determined by single-crystal diffraction in the solid state and verified in aqueous solution by high-energy X-ray scattering. The nanoparticles are composed of 38 Pu ions arranged in an oxide lattice with a structure slightly distorted from the fluorite phase seen in PuO2. An absorption spectrum of the Pu clusters in solution is consistent with the classic Pu-polymer optical response.
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Soderholm et al. (2007) studied this question.
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