高等学校化学学报

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (9): 928.

• 研究论文 • 上一篇    下一篇

光照法研究超氧化物歧化酶及其模型化合物与超氧离子的反应动力学

罗勤慧, 沈孟长, 高伟, 彭庆云   

  1. 南京大学配位化学研究所
  • 收稿日期:1989-01-11 出版日期:1990-09-24 发布日期:1990-09-24
  • 通讯作者: 罗勤慧, 210008
  • 基金资助:

    国家自然科学基金

A Study on Reaction Kinetics of Superoxide Dismutase and Its Model Compounds with Superoxide Ion by Illumination

Luo Qinhui, Shen Mengchang, Gao Wei, Peng Qingyun   

  1. Coordination Chemistry Institute, Nanjing University, Nanjing
  • Received:1989-01-11 Online:1990-09-24 Published:1990-09-24

PDF (PC)

被引次数

50

摘要： 用改进的光照法研究了超氧化物歧化酶及其模型化合物μ-桥基·二(2,6-二乙酰基吡啶)缩二丙二胺合铜(Ⅱ)(桥基为SCN-,N3-,I-,Br-,Cl-,OH-)与超氧离子的反应动力学,测定了反应速率常数kQ,结果表明,超氧化物歧化酶的kQ与脉冲辐解法及黄嘌呤氧化酶法的结果一致。6种配合物中,Cu2L(SCN)(ClO4)3的kQ最大,Cu2L(N3)(ClO4)3的最小,并讨论了真kQ不同的原因。

关键词: 光照法, 超氧离子, 超氧化物歧化酶, 模型化合物, 反应速率常数

Abstract: We studied the reaction kinetics of superoxide dismutase and its model compounds μ-bridge-bis-N,N'-1,3-propylene bis(2,6-diacetylpyridine)iminato copper( Ⅱ )(bridge being SCN-,N3-, I-, Br-,Cl- and OH-)by modified illumination method and the rate constants kQ of the reaction were obtained. kQ measured for superoxide dismutase is in agreement with those measured by pulse radiolysis and xanthine oxidase method. Among the six complexes, Cu2L(SCN)(ClO4) has a maximum value of kQ and Cu2L(N3)(ClO4)3 has a minimum one. The reason for different values of kQ was discussed based on the present results and previous paper.

Key words: Illumination method, Superoxide ion, Superoxide dismutase, Model compound of supero-xide dismutase, Rate constant of reaction

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