Interaction of arsenite ions with molybdate in aqueous solution |
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| Authors: | O S Koshcheeva L I Kuznetsova O V Shuvaeva |
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| Institution: | (1) Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, ul. akademika Lavrent’eva 3, Novosibirsk, 630090, Russia;(2) Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, ul. akademika Lavrent’eva 5, Novosibirsk, 630090, Russia |
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| Abstract: | Interaction of arsenite ions with molybdate ions in aqueous HClO4 at pH of 3–5 were studied using spectrophotometry. A heteropoly anion (HPA) with the AsMo4 stoichiometry was revealed. Elemental analysis, X-ray photoelectron spectroscopy, and IR spectroscopy were used to characterize the composition and structure of the cesium salt of As(III)-Mo(VI) HPA precipitated from solution. The comparison of the IR spectra of cesium salts of the synthesized HPA and dimethylarsenite HPA (CH3)2AsMo4O15H2?, whose structure is known, implies that AsMo4O 15 3? has a similar structure, where the AsO 2 ? group is linked by four connected molybdenum octahedra (Mo4O12)O2?. |
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