Studies on Synthesis and Characterization of Guanidinium Salts of Lanthanides-Hctcropolytungstosilicate

Abstract

Abstract: Potassium salts of lanthanides-heteropolytungstosilicate,LnL, were synthesised in weak basic solution in the presence of Ln³⁺(Ln=La, Pr. Nd, Sm-Yb). Then,they, were turned into their guanidinium salts, (CN₃H₆)₅[LnSiW₁₁O₃₉] nH₂O, by the way of metathesis reaction. It is shown that Ln³⁺is in the inner-coordination sphere according to the resuluts of cation exchange. The guanidinium salts of lanthanides-heteropolytungstosilicate were characterized by IR,UVspectra, DSC-TGA and X-ray powder diffraction.

Key words: Lanthanide element, Heteropoly-coordination compound, Guanidinium salt, Synthesis

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Zhai Ying-li, Chen Xiue-nian, Tan Min-yu, Wang Qiu-ying . Studies on Synthesis and Characterization of Guanidinium Salts of Lanthanides-Hctcropolytungstosilicate[J]. Chem. J. Chinese Universities, 1991, 12(3): 299.

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Studies on Synthesis and Characterization of Guanidinium Salts of Lanthanides-Hctcropolytungstosilicate

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