高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (4): 340.

• 研究论文 • 上一篇    下一篇

稀土元素钼砷杂多配合物的合成与性质研究

王恩波, 胡长文, 周延修, 刘景福   

  1. 东北师范大学化学系
  • 收稿日期:1988-08-11 出版日期:1990-04-24 发布日期:1990-04-24
  • 通讯作者: 王恩波
  • 基金资助:

    国家自然科学基金

Syntheses of Rare Earth Molybdoarsenate Heteropoly Complexes and Their Properties

Wang Enbo, Hu Changwen, Zhou Yanxiu, Liu Jingfu   

  1. Department of Chemistry, Northeast Normal University, Changchun
  • Received:1988-08-11 Online:1990-04-24 Published:1990-04-24

摘要: 本文报道了通式为(NH4)17[RE(As2Mo17O61)2]·nH2O的13种杂多配合物(RE=Y,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Yb)的合成条件。研究了它们的IR、UV、CV、极谱和TG-DTA等性质。在水溶液中该配位反应为三步双电子还原机理,其杂多配合物结构为四方反棱柱型。

关键词: 稀土, 钼砷杂多配合物, 双电子还原

Abstract: In this paper, the preparation of heteropoly compounds (NH4)17(RE(Assub>2Mosub>17O61)2) · nH2O (RE=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Y) is reported. The physical and chemical characters of the new preparative heteropoly compounds were studied by using UV, IR, CV, TG-DTApolarography. It was determined that the condition under which the heteropoly anion RE (Assub>2Mosub>17O61)217- could stably exist in solution is pH=2.8-4.0 at room temperature. The redox properties of rare earth molybdoarsenate complexes in solution and their thermal stabilities were also studied. It was deduced that heteropoly compounds (NH4)17[RE(As2Mo17O61)2] · nH2Oand K16[Ce(a2-P2W17O61)2] · 50H2Ohave the same structure.

Key words: Rare earth, Molybdoarsenate complexes, Double electron reduction

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