高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (8): 1118.

• 论文 • 上一篇    下一篇

第四周期过渡金属钼磷三元杂多化合物的氧化还原性质研究

秦笃捷, 李晶, 王国甲, 吴越   

  1. 吉林大学化学系, 长春, 130023
  • 收稿日期:1991-08-19 出版日期:1992-08-24 发布日期:1992-08-24
  • 通讯作者: 秦笃捷

Studies on the Redox Properties of Heteropolymolybdates with Transition Metals

QIN Du-Jie, LI Jing, WANG Guo-Jia, WU Yue   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1991-08-19 Online:1992-08-24 Published:1992-08-24

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被引次数

1

摘要： 研究了Keggin结构钼磷杂多化合物Na5[PM(H2O)Mo11O39]·nH2O(M=Mn2+,Co2+,Ni2+,Cu2+,Zn2+在溶液中的氧化还原性质,发现环境的改变可对杂多阴离子的极谱半波电位产生影响,其影响程度的大小决定于过渡金属离子本身的性质。取代后的钼磷杂多阴离子的半波电位顺序为Ni2+>Co2+>Zn2+>Cu2+>Mn2+,pH值的变化影响氧化还原性质,并阐述了变价金属Cu2+对杂多阴离子氧化还原性质的影响.

关键词: 杂多化合物, 氧化还原, 循环伏安

Abstract: The redox properties of heteropolymolybdates with transition metals,Na5[PM(H2O) Mo11O39]·nH2O(M=Mn2+,Co2+,Ni2+,Cu2+,Zn2+),in water-dioxane solutions were studied by using electrochemical method.We found the variation of the coordination circumstance would influence the half-wave potential (E1/2) of the heteropoly anions,and the extent of the influence depends on the properties of the inserted transition metals ions.The order of the polaro-graphic half-wave potential of the heteropolyanious substituted by transition metal ions is as follows,Ni2+>Co2+>Zn2+>Cu2+>Mn2+.The effect of Cu2+ ion on the redox properties of the heteropoly anions is discussed in detail.

Key words: Heteropoly compounds, Redox, Cyclic voltammetry

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