Studies on the Redox Properties of Rare Earth Heteropoly Tungstoarsenate K<sub>1</sub>7[

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The redox properties of K17[Ln(As2W17O61)2](Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Tm or Yb) in solution were investigated using polarographic and cyclic voltammographic methods. Experimental results indicate that the heteropolyanions underwent three-st
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