Preparation and Characterization of Potassium Heteropoly-molybdophosphate of the Lanthanide Elements

Abstract

Abstract: The preparation and the physical and chemical characterization of K₁₇[Ln(P₂Mo₁₇O₆₁)₂]·xH₂O(Ln=La,Ce, Pr, Nd, Sm, Eu, Gd, Tb, Yb) are reported. The test of cation bedexchanger shows that the lanthanide cations are interior. Complexes [Ln(P₂Mo₁₇O₆₁)₂]^17-are stable in the solution of the pHrange 3. 2-5. 5. IRspectra show that the ligand is α₂-PaMo₁₇O₆₁^10-, and the lanthanide cations are octahedral coordination. It is inferred that the complexes resemble the K₁₇[Ce(Ⅳ) (α₂-P₂W₁₇O₆₁)₂] ·xH₂O in structure. The UVspectrum, polarogram, CV, magnetic susceptibility and thermal stability of the complexes are studied. Also the properties of the complexes are discussed from the structure.

Key words: Lanthanide, Heteropoly acid, Potassium molybdophosphate

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Wang En-bo, You Wan-sheng, Liu Jing-fu, Hu Chang-wen . Preparation and Characterization of Potassium Heteropoly-molybdophosphate of the Lanthanide Elements[J]. Chem. J. Chinese Universities, 1991, 12(10): 1279.

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Preparation and Characterization of Potassium Heteropoly-molybdophosphate of the Lanthanide Elements

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