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полныйинформационныйкраткий
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    Study of Hydration and Hydrolysis of Pu(IV) by the Density Functional Method / M. K. Ganusova [et al.] // Chem. Sustain. Dev. - 2017. - Vol. 25, Is. 3. - P239-246. - Cited References:36 . - ISSN 0869-8538
РУБ Chemistry, Multidisciplinary
Рубрики:
FREE-ENERGIES
   APPROXIMATION

   PLUTONIUM(IV)

   CHEMISTRY

   ACTINIDES

Кл.слова (ненормированные):
density functional method -- plutonium (IV) complexes -- the polarizable -- continuum model -- hydrolysis constants -- hydration free energy model -- hydrolysis constants -- hydration free energy
Аннотация: The structure and the first step of hydrolysis of hydrated Pu(IV) ion in aqueous medium were studied using relativistic density functional theory and the polarizable continuum model (PCM). According to calculations, the Pu(IV) ion was mainly coordinated with eight water molecules. The calculated distance Pu-O of 238-241 pm was in good agreement with the experimental value ((239 +/- 2) pm). It was demonstrated that for the correct replication of constants log K-1(0) of the first hydrolysis step, it was important to use scaling multipliers adequate to the charge of the hydrated complex when constructing the density that included the solvated complex in PCM model. The calculated values of log K-1(0) of -1.1...-0.2 were close to the experimentally defined range (-0.6-0.6). The correct replication of hydrolysis constants allowed considering the calculated range of the hydratation free energies of the Pu(IV) ion of 6070-6157 kJ/mol as a reasonable prediction of experimental values.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk, Russia.

Доп.точки доступа:
Ganusova, M. K.; Ivanova-Shor, E. A.; Shor, A. M.; Nasluzov, V. A.; Rubaylo, A. I.

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