Тонкие химические технологии (Jun 2007)

Complexation of Rh(III) in sulfuric acid solutions

  • A. V. Belyaev,
  • M. A. Fedotov,
  • S. N. Shagabutdinova,
  • E. I. Pavlova

Journal volume & issue
Vol. 2, no. 3
pp. 29 – 35

Abstract

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The complexation in the system Rh(III) – H<sub>2</sub>SO<sub>4</sub> – H<sub>2</sub>O at the room temperature in the dilute sulfuric acid has been studied by 103Rh and 17O NMR. The most stable species in solutions are [Rh<sub>2</sub>(μ-SO<sub>4</sub>)<sub>2</sub>(H<sub>2</sub>O)<sub>8</sub>] <sup>2+</sup> and [Rh<sub>2</sub>(μ-OH)(μ-SO<sub>4</sub>)(H<sub>2</sub>O)<sub>8</sub>] <sup>3+</sup>; we have established that the solid «rhodium sulfates” are amorphous glassy phases with variable composition