Complexation of Rh(III) in diluted sulfuric acid solutions |
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| Authors: | A V Belyaev V D Il’yashevich E I Pavlova M A Fedotov S N Shagabutdinova |
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| Institution: | (1) Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent’eva 3, Novosibirsk, 630090, Russia;(2) Krastsvetmet Co., Krasnoyarsk, Russia;(3) Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent’eva 5, Novosibirsk, 630090, Russia |
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| Abstract: | Complex formation in a system Rh(III)-H2SO4-H2O was studied by the 103Rh and 17O NMR spectroscopy at room temperature. The formation of two interrelated systems of mononuclear and polynuclear complexes was established in the above solutions. The predominant species in the first system is a labile ionic pair {Rh(H2O) 6 3+ SO 4 2? }+, while in the second system, two inert binuclear complexes Rh2(μ-SO4)2(H2O)8]2+ and Rh2(μ-SO4)(μ-OH)(H2O)8]3+ prevail. |
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