中华医学超声杂志

应用化学 ›› 1992, Vol. 0 ›› Issue (2): 46-50.

• 研究论文 • 上一篇    下一篇

镧系元素钨硅杂多配合物异构体的合成及性质

牛增元, 瞿伦玉, 陈亚光, 彭军, 刘景福   

  1. 东北师范大学化学系, 长春 130024
  • 收稿日期:1991-02-11 修回日期:1991-07-04 出版日期:1992-04-10 发布日期:1992-04-10
  • 基金资助:
    国家自然科学基金

SYNTHESES AND CHARACTERIZATION OF HETEROPOLY TUNGSTOSILICATE ISOMERS OF LANTHANIDE ELEMENTS

Niu Zengyuan, Qu Lunyu, Chen Yaguang, Peng Jun, Liu Jingfu   

  1. Department of Chemistry, Northeast Normal University, Changchun 130024
  • Received:1991-02-11 Revised:1991-07-04 Published:1992-04-10 Online:1992-04-10

PDF

528

被引次数

3

摘要： 合成了通式为K13[Ln(βi-SiW11O39)2]·xH2O(Ln=La,Ce,Pr,Nd,Sm,Gd,Er;βi=βI,β3)的两个系列的β-异构体。通过元素分析、极谱、循环伏安法,UV和VIS光谱、磁化率以及热分析等手段研究了异构体的组成和性质。

关键词: 镧系元素, 钨硅杂多配合物, 杂多酸盐异构体, 合成

Abstract: The isomers of K13[Ln(βi-SiW11O39)2·xH2O (Ln=La, Ce, Pr, Nd, Sm, Gd, Er; βi=β1 and β3) have been prepared and characterized by elemental analysis, polarography,CV, UV-VIS, magnetic susceptibility, magnetic moments determination and thermal analysis. It is showed that the polarographic half wave Potential E1/2 for the new complexes are in the same order as for the βi-SiW11. In β-isomers the E(1/2) of βi decreases with the increaoe of the number of unrotated W3O13 group.A linear relationship between E1/2(Ⅰ)and the lowest energy of charge-transfer of the complexes is found. It can be concluded from VIS spectra that Ln(βi-SiW11)2 and Ln(α-SiW11)2 have an identical geometric structure.

Key words: lanthanide elements, tungstosilicate heteropoly complex, isomer, synthesis

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