Peroxide derivatives of molybdenum(VI) in neutral and alkaline media |
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Authors: | László J. Csányi István Horváth Zoltán M. Galbács |
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Affiliation: | (1) Institute of Inorganic and Analytical Chemistry, A. József University, P.O. Box 440, H-6701 Szeged, Hungary |
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Abstract: | Summary The peroxidation of molybdenum(VI) was investigated in neutral and alkaline media. The stability constants of the peroxo complexes were determined by spectrophotometric measurement as (9.12±0.67)×10–7, (2.68±0.17) ×105, (1.26±0.06)×106 and (1.58±0.02) for the 11, 21 (yellow), 31 and 41 (red) species. The diperoxomolybdate disproportionates into the tetraperoxo derivative when treated with alkali. Formation of the tetraperoxo complex was found to be pH dependent according to a curve, with maximum at pH 10. Acidification of tetraperoxomolybdate solution results in the regeneration of hydrogen peroxide and the diperoxo complex is reformed. |
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