Plutonium volatility in ozonization of alkaline solutions of Pu(VI) hydroxo complexes

  title={Plutonium volatility in ozonization of alkaline solutions of Pu(VI) hydroxo complexes},
  author={Maxim V. Nikonov and Yu. M. Kiselev and Ivan G. Tananaev and Boris F. Myasoedov},
  journal={Doklady Chemistry},
69 Processes involving the transition of chemical compounds into the gas phase are of both theoretical and practical significance. Such processes are impor� tant for actinides because their concentration, isola� tion, and purification and also isotope separation are known to present serious difficulties. Such processes are also important for plutonium. Assuming that the properties of the previously described plutonium tetroxide [1, 2] can be analogous to those of easily sub� limable osmium and… 
15 Citations
Synthesis and Structures of Plutonyl Nitrate Complexes : Is Plutonium Heptavalent in PuO 3 ( NO 3 ) 2 – ?
Gas-phase plutonium nitrate anion complexes were produced by electrospray ionization (ESI) of a plutonium nitrate solution. The ESI mass spectrum included species with all four of the common
Preparation, stability, and structural characterization of plutonium(VII) in alkaline aqueous solution.
The stoichiometry of the oxidation of Cr( III) by Pu is consistent with that expected for a valence-pure Pu(VII) preparation by ozonation and, in turn, stoichiometrically equivalent to the established Np(VII)/Cr(III) redox reaction.
Synthesis and structures of plutonyl nitrate complexes: is plutonium heptavalent in PuO3(NO3)2(-) ?
Results indicate that Pu(VII) is not a readily accessible oxidation state in the gas phase, despite that it is stable in solution and solids, but rather that a Pu(VI)-O· bonding configuration is favored, in which an oxygen radical is involved.
Oxidation states, geometries, and electronic structures of plutonium tetroxide PuO4 isomers: is octavalent Pu viable?
It is shown here that no stable electronic homologue of octavalent RuO4 and OsO4 exists for PuO4, even though Pu has the same number of eight valence electrons as Ru and Os.
Heptavalent Neptunium in a Gas-Phase Complex: (NpVIIO3+)(NO3-)2.
The results establish the extreme Np (VII) oxidation state in a gas-phase complex, and demonstrate the inherently greater stability of Np(VII) versus Pu(VII).
Plutonium and transplutonium element trioxides: molecular structures, chemical bonding, and isomers.
  • A. Zaitsevskii
  • Chemistry
    Physical chemistry chemical physics : PCCP
  • 2015
Ground-state equilibrium geometries, energetics, and vibrational frequencies of AnO3 molecules, An = Pu through Cf, and their isomers are calculated using an accurate small-core pseudopotential model
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According to early Хα scattered wave calculations (1990, cited in [2]), PuO4 was assumed to have a tetra hedral equilibrium geometry. This is consistent with the classical postulate [3]: mutual
Relativistic density functional theory modeling of plutonium and americium higher oxide molecules.
The results of electronic structure modeling of plutonium and americium higher oxide molecules by two-component relativistic density functional theory are presented, and relatively high stability of the mixed heptoxide PuAmO7 is noticed.
Molecular oxides of high-valent actinides
The past decade has been very productive in the field of actinide (An) oxides containing high-valent An. Novel gas-phase experimental and an impressive number of theoretical studies have been
On the Highest Oxidation States of Metal Elements in MO4 Molecules (M = Fe, Ru, Os, Hs, Sm, and Pu).
Metal tetraoxygen molecules of all metal atoms M with eight valence electrons are theoretically studied using density functional and correlated wave function approaches to contribute to the general understanding of the periodic trends of oxidation states across the periodic table.


Co-ordination chemistry of higher oxidation states. Part 13. Synthesis and properties of alkali-metal hydroxo-oxo-osmate(VIII) compounds and the molecular structure of Cs[O4Os(µ-OH)OsO4]
The reaction of concentrated aqueous solutions of caesium or rubidium hydroxide with osmium tetraoxide, in various ratios produced the osmates(VIII), M2[OsO4(OH)2], M[OsO4(OH)], and M[O4Os(OH)OsO4](M
Experimental data points to the existence of plutonium(VIII) in alkaline solutions
The ozonising of an alkaline Pu VI solution resulted in the formation of both Pu VII and Pu VIII , and the black-blue colour earlier was ascribed to Pu VII .