高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (3): 316.

• 研究简报 • 上一篇    下一篇

钨硅铁杂多酸盐的Mssbauer谱研究(Ⅱ)—三取代杂多钨硅酸盐异构体

张保建1, 瞿伦玉1, 苏桂芬2, 李忠民2, 刘善贵2   

  1. 1. 东北师范大学化学系;
    2. 东北师范大学物理系
  • 收稿日期:1988-07-19 出版日期:1990-03-24 发布日期:1990-03-24
  • 通讯作者: 张保建
  • 基金资助:

    国家自然科学基金

Studies on Iron(Ⅲ) Heteropolytungstosillcates with M?ssbauer Spectra ( Ⅱ ) —Trisubstituted Heteropolytungstosilicate isomers

Zhang Baojian1, Qu Lunyu1, Su Guifen2, Li Zhongmin2, Liu Shangui2   

  1. 1. Department of Chemistry, Northeast Normal Iniversity, Changchun;
    2. Department of Physics, Northeast Normal University, Changchun
  • Received:1988-07-19 Online:1990-03-24 Published:1990-03-24

摘要: 三取代杂多钨硅酸盐SiW9M3O40n-有4种异构体,即A-α、A-β、B-α、B-β型[1]。α和β异构体的定向合成条件成熟且性质研究也较深入,故容易鉴别。A和B异构体则不易区分。我们合成了α和β-MaHb[SiW9Fe3(H2O)3O37]·xH2O(M=K+,Me4N+,Et4N++Na+,Bu4N+;a+b=7),测定了四乙基铵钠盐的M?ssbauer谱、X射线光电子能谱和磁矩,确定了异构体中Fe的位置以及杂多阴离子的异构类型。

关键词: 三铁九钨硅酸盐, 异构体, M?ssbauer谱

Abstract: The M?ssbauer spectra of the triferricononatungstosilicate isomers α and β-(Et4N)3.5Na2.5H-[SiW9Fe3(H2O)3O37] · xH2Owere determined. The Mossbauer parameters are as follows:δ=0. 198 mm · s-1, ΔEQ=0. 441 mm · s-1 for the α-isomer; δFea' = 0.190 mm · s-1Feb', = 0. 133 mm · s-1, ΔEQFea', = 1.197 mm · s-1, ΔEQFeb', = 0. 446 mm · s-1 for the β-isomer. The structures and bonds of the compounds were disscussed according to the Mdssbauer and XPSspectra as well as their magnetic moments. Both α and β isomers are all B-structure, which shows that A→Bstructure rearrangement occurred in the synthesizing process of the β-isomer.

Key words: Triferricononatungstosilicate, Lsomer, Mossbauer spectra

TrendMD: