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Rhodium(III) Speciation in Concentrated Nitric Acid Solutions. / Vasilchenko, Danila; Vorob'eva, Sofia; Tkachev, Sergey и др.
в: European Journal of Inorganic Chemistry, Том 2016, № 23, 2016, стр. 3822-3828.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Rhodium(III) Speciation in Concentrated Nitric Acid Solutions
AU - Vasilchenko, Danila
AU - Vorob'eva, Sofia
AU - Tkachev, Sergey
AU - Baidina, Iraida
AU - Belyaev, Anatoliy
AU - Korenev, Sergey
AU - Solovyov, Leonid
AU - Vasiliev, Alexander
PY - 2016
Y1 - 2016
N2 - The interaction of rhodium(III) aqua ions with nitrate ions in 3–16 m nitric acid solutions has been studied by103Rh and15N 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.
AB - The interaction of rhodium(III) aqua ions with nitrate ions in 3–16 m nitric acid solutions has been studied by103Rh and15N 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.
KW - Nitrates
KW - NMR spectroscopy
KW - Rhodium
UR - http://www.scopus.com/inward/record.url?scp=84978540357&partnerID=8YFLogxK
U2 - 10.1002/ejic.201600523
DO - 10.1002/ejic.201600523
M3 - Article
AN - SCOPUS:84978540357
VL - 2016
SP - 3822
EP - 3828
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
SN - 1434-1948
IS - 23
ER -
ID: 25401543