【摘要】 合成了LnL（L代表配体）型镧系硅钨杂多配合物K₅[LnSiW₁₁O₃₉],再分别与盐酸胍盐反应,得（CN₃H₅）₅[LnSiW₁₁O₃₉]·nH₂O。阳离子交换试验证明Ln³⁺居于配合物内界。用IR、UV、DSC-TGA和XRD分析,对杂多配合物进行了表征。更多还原

【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,UV spectra, DSC-TGA and X-ray powder diffraction.更多还原