Conclusions
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1.
The authors have measured the chemical shifts of the17 O NMR and the rate of exchange of the isotope17 O between the polyanions and water in aqueous solutions of mixed P-V-W heteropoly acids containing 1–4 vanadium atoms.
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2.
The O atoms of different types in the structure of the heteropoly anions are exchanged at different rates; the rate of exchange depends on the composition of the anion.
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3.
The rate of isotope exchange of oxygen in aqueous solutions of P-V-W heteropoly acids is lower than in solutions of the analogous P-V-Mo heteropoly acids.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1477–1480, July, 1980.
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Eedotov, M.A., Maksimovskaya, R.I., Begalieva, D.U. et al. 17O NMR spectra and isotope exchange of oxygen in aqueous solutions of phosphorus-vanadium-tungsten heteropoly acids. Russ Chem Bull 29, 1025–1028 (1980). https://doi.org/10.1007/BF00949147
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DOI: https://doi.org/10.1007/BF00949147