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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vasilchenko D., Vorob'eva S., Tkachev S., Baidina I. A., Belyaev A., Korenev S., Solovyov L., Vasiliev A. D.
Заглавие : Rhodium(III) speciation in concentrated nitric acid solutions
Коллективы : Russian Foundation for Basic Research [16-03-00549 A]; Ministry for Education and Science of the Russian Federation
Место публикации : Eur. J. Inorg. Chem.: Wiley-VCH Verlag, 2016. - Vol. 2016, Is. 23. - P.3822-3828. - ISSN 1434-1948, DOI 10.1002/ejic.201600523. - ISSN 1099-0682(eISSN)
Примечания : Cited References:31. - This work was supported by the Russian Foundation for Basic Research (grant number 16-03-00549 A). D. V. thanks the Ministry for Education and Science of the Russian Federation for the award of a President of the Russian Federation for Young Scientists Fellowship.
Предметные рубрики: MAGNETIC-RESONANCE
FISSION PLATINOIDS
AQUEOUS-SOLUTIONS
PT-195 NMR
RH(III)
SPECTROSCOPY
CHEMISTRY
DISSOCIATION
PLATINUM(IV)
COMPLEXES
Ключевые слова (''Своб.индексиров.''): rhodium--nmr spectroscopy--nitrates
Аннотация: The interaction of rhodium(III) aqua ions with nitrate ions in 3–16 m nitric acid solutions has been studied by 103Rh and 15N NMR and Raman spectroscopy. The mononuclear complexes [Rh(H2O)6–n(NO3)n]3–n (n = 1–4) were found to be the only form of rhodium(III) existing in the solutions with the metal concentration in the range 0.2–1.3 m. The dynamics of the H2O → NO3– substitution process was studied at 80 °C. An increase in the average number of nitrate groups bonded to rhodium with increasing concentration of nitric acid was also determined. The fine crystalline salt Rb4trans-[Rh(H2O)2(NO3)4][Rh(NO3)6] was obtained by solvothermal concentration of the rhodium nitric acid solution on addition of rubidium nitrate. The structure of the salt was solved by the powder X-ray diffraction method, with monodentate coordination of nitrato ligands found for both the [Rh(NO3)6]3– and trans-[Rh(H2O)2(NO3)4]– anions.
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