Metal catalysis in oxidation by peroxides. 24. Extraction of aqueous peroxomolybdenum species into organic media and their reactivity

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Abstract
The effect of the lipophilicity and coordinating ability of neutral ligands, belonging to the classes of phosphoric amides and pyridine oxides, on the extraction of the neutral oxidants molybdenum(VI)–peroxo complexes from an aqueous acidic phase to an organic one, has been studied. The nature of the Mo(VI)–peroxo species present both in aqueous and organic phase has also been investigated. Sizable amounts of mineral acid, added to adjust pH, may be extracted into the organic phase. The various factors affecting this process such as the nature of the acid added, the organic solvent and the neutral ligand, as well as the effect of this feature on the partition of the oxidant between the two phases are briefly discussed.

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