影像科学与光化学 ›› 1990, Vol. 8 ›› Issue (1): 7-13.DOI: 10.7517/j.issn.1674-0475.1990.01.7

• 研究论文 • 上一篇    下一篇

十二钨酸络钴酸钾氧化肼、不对称二甲肼和羟胺的动力学和机理

高明球, 周本茂, 夏培杰, 任新民   

  1. 中国科学院感光化学研究所 北京 100012
  • 收稿日期:1988-06-02 修回日期:1989-08-14 出版日期:1990-02-20 发布日期:1990-02-20
  • 通讯作者: 任新民

A STUDY OF KINETICS AND MECHANISM OF OXIDATION OF DIMETHYLHYDRAZINE HYDRAZINE AND HYDROXYLAMINE BY 12-TUNGSTOCOBALT (Ⅲ) ATE

GAO MIN-QIU, ZHOU BEN-MAO, XIA PEI-JIE, REN XIN-MIN   

  1. Institute of Photographic Chemistry, Academia Sinica, Beijing 100012, P. R. China
  • Received:1988-06-02 Revised:1989-08-14 Online:1990-02-20 Published:1990-02-20

摘要: 本文研究了十二钨酸络钴酸钾(K5Co(Ⅲ)W12O40,简记为Co(Ⅲ)WO)氧化电位和pH的关系,Co(Ⅲ)WO在最大吸收处(388nm)吸光度和浓度间的关系。用分光光度法研究了Co(Ⅲ)WO在HAc-NaAc缓冲体系中氧化硫酸肼、不对称盐酸二甲肼、硫酸羟胺的动力学,给出了相应的表观活化能、活化熵等动力学参数,讨论了通过氩键传递电子的可能性。

关键词: 笼状络合物, 电子转移, 氧化反应

Abstract: The oxidation of dimethylhydrazine hydrazine and hydroxylamine by 12-tungsto-balt (Ⅲ) ate in acetate buffer solution were investigaied.In the pH range of the experiment,all the systems have a similar empirical rate equation: r=d[K5Co(Ⅲ)W12O40]/dt=[K5Co(Ⅲ)W12O40][R]T/[H+] The values of the activation parameters of the reactions were given.A mechanism of electron transfer through hydrogen bonding was suggested.

Key words: cage complex, oxidation reaction, electron transfer