物理化学学报 >> 1997, Vol. 13 >> Issue (07): 598-602.doi: 10.3866/PKU.WHXB19970705

研究论文 上一篇    下一篇

Ni2L配合物的热稳定性和电化学研究

周钰明,葛裕华,苟少华,鞠晃先,刘举正   

  1. 东南大学化学化工系,南京 210096|南京大学化学系,南京 210093
  • 收稿日期:1996-12-02 修回日期:1997-02-28 发布日期:1997-07-15
  • 通讯作者: 周钰明

The Thermal Stability and Electrochemical Behaviors of A Novel Macrocyclic Dinuclear Nickel(III) Complex

Zhou Yu-Ming,Ge Yu-Hua,Gou Shao-Hua,Ju Huang-Xian,Liu Ju-Zheng   

  1. Department of Chemistry and Chemical Engineering,Southeast University,Nanjing 210096|Department of Chemistry,Nanjing University,Nanjing 210093
  • Received:1996-12-02 Revised:1997-02-28 Published:1997-07-15
  • Contact: Zhou Yu-Ming

摘要:

用金属离子作模板通过N-氧化吡啶-2,6-二甲醛与1,3-丙二胺缩合得到了新型大环水溶性希夫碱金属配合物Ni2LCl6•C2H5OH•10H2O,对其进行了元素分析、红外光谱、电化学及热稳定性能的研究.结果显示:Ni2L配合物的电极反应可以认为是一个双电子传输过程,并且电极过程是一个不可逆过程,求得它的扩散系数为4.07×10-6cm2•s-1.该配合物的稳定性较好,约在563℃配合物发生分解,失去有机基因,生成氧化物.

关键词: 大环, 双核, 镍配合物, 希夫碱, 伏安曲线, DTA/TG

Abstract:

A new macrocyclic dinuclear nickel(Ⅲ) complex, prepared by the condensation of 2,6-diformylpyridine N-oxide with 1,3-diaminopropane in the presence of Ni(Ⅱ)Cl2•6H2O and formulated as Ni2LC16•C2H5OH•10H2O, was characterized by elemental analyses, infrared spectrum, differential thermal analysis (DTA), thermogravimetry(TG) and investigated electrochemically. The results show that two nickel ions are situated at the same chemical environments in the compound and the electrode reaction can he thought as a double electron transfer process which is irreversible. The diffusion coefficient is 4.07 x 10-6cm2•s-1. The Ni complex exhibited good thermal stability, it decomposed with loss of its organic portion and the formation of Ni2O3 as a final product at 563 ℃.

Key words: Macrocyclic, Dinuclear, Nickel(III) complex, Voltammogram, DTA/TG