Rhodium(III) Speciation in Concentrated Nitric Acid Solutions | Научно-инновационный портал СФУ

Rhodium(III) Speciation in Concentrated Nitric Acid Solutions

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1002/ejic.201600523

Ключевые слова: 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 Rh-103 and N-15 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 degrees 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 Rb(4)trans-[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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Издание

Журнал: EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

Выпуск журнала: Is. 23

Номера страниц: 3822-3828

ISSN журнала: 14341948

Место издания: WEINHEIM

Издатель: WILEY-V C H VERLAG GMBH

Авторы

  • Vasilchenko D. (Novosibirsk State University)
  • Vorob'eva S. (Novosibirsk State University)
  • Tkachev S. (Nikolaev Institute of Inorganic Chemistry,Siberian Branch of the Russian Academy of Science)
  • Baidina I. (Nikolaev Institute of Inorganic Chemistry,Siberian Branch of the Russian Academy of Science)
  • Belyaev A. (Nikolaev Institute of Inorganic Chemistry,Siberian Branch of the Russian Academy of Science)
  • Korenev S. (Novosibirsk State University)
  • Solovyov L. (Institute of Chemistry and Chemical Technology,SB RAS)
  • Vasiliev A. (Siberian Federal University)

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