镧系硅钨杂多酸胍盐的合成及物性研究  

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

作　　者：翟应离[1] 陈学年[1] 谭民裕[1] 王秋莹[1] 

机构地区：[1]兰州大学化学系,730000

出　　处：《高等学校化学学报》1991年第3期299-303,共5页Chemical Journal of Chinese Universities

摘　　要：合成了LnL(L代表配体)型镧系硅钨杂多配合物K_5[LnSiW_(11)O_(39)],再分别与盐酸胍盐反应,得(CN_3H_5)_5[LnSiW_(11)O_(39)]·nH_2O。阳离子交换试验证明Ln^(3+)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。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.

关 键 词：稀土元素 杂多络合物 胍盐 硅 钨 

分 类 号：O614.33[理学—无机化学]