E 97 Extraction of vanadium (IV) with DI-2-ethylhexylphosphoric acid [Электронный ресурс] / L. D. Kurbatova, P. A. Slepukhin, D. I. Kurbatov, E. V. Zabolotskaya // Phosphorus, Sulfur, and Silicon and the Related Elements. - 2012. - Vol.187, №9. - P1032-1037 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ELECTRONIC SPECTRA -- ESR SPECTROSCOPY -- VANADIUM Аннотация: It was established with the use of electron and ESR spectroscopic methods that in the presence of sodium sulfate, the extraction of vanadium (IV) with di-2-ethylhexylphosphoric acid takes place by a cation-exchange mechanism giving rise to two complex compounds of vanadium (IV) oxocation with sulfuric and di-2-ethylhexylphosphoric acid anions. The vanadium (IV) oxocation sulfate complex extracted in the solid state was examined with X-ray structural analysis. It was shown that the vanadium (IV) oxocation sulfate complex trihydrate crystallizes in the centrosymmetrical space group to form dimers with bridging sulfate groups |