Studies on the Synthesis, Structure and Properties of K10H3[Ln(SiMo11-nWnO3)2]·mH2O(n=5,7,9)

Abstract

Abstract: In this paper a synthetic method of K₁₀H₃[Ln(SiMo_11-nW_nO₃₉)₂·mH₂O(n=5,7,9) (n=5,7,9;Ln=La³⁺,Ce³⁺,Pr³⁺,Nd³⁺,Sm³⁺,Eu³⁺,Gd³⁺,Dy³⁺,Yb³⁺)was studied. The crystal structure of K₁₀H₃[Pr(SiMo₆W₅O₃₉)₂]·30H₂O was determined,the crystal adta are as follows;monoclinic,space group P2₁/n空间群,晶胞参数:a=1.7134(3)nm,b=2.6896(5)nm,c=2.1232(3)nm,β=103.60(3)°,Z=4. The characteristics of IR spectra, electronic spectra and X-ray powder diffraction of the of the new complexes were discussed. The investigation results of pyrolytic property proved that the pyrolysis temperature range of them was:n=5,250～300℃;n=7,300～350℃;n=9,350～400℃.

Key words: Crystal structure, Lanthanide, Heteropoly acid complex

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Zhou Bai-bin, Shan Yong-kui, Liu Zong-xu, Zhang Xi-long . Studies on the Synthesis, Structure and Properties of K₁₀H₃[Ln(SiMo_11-nW_nO₃)₂]·mH₂O(n=5,7,9)[J]. Chem. J. Chinese Universities, 1991, 12(11): 1425.

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Studies on the Synthesis, Structure and Properties of K₁₀H₃[Ln(SiMo_11-nW_nO₃)₂]·mH₂O(n=5,7,9)

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