高等学校化学学报

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (8): 809.

• 研究论文 • 上一篇    下一篇

三元络合物的动力学研究和机理探讨——钪-铬天青S-溴化十六烷基三甲铵体系

林智信, 蔡汝秀, 胡可人, 方贤安, 安从俊   

  1. 武汉大学化学系
  • 收稿日期:1988-12-29 出版日期:1990-08-24 发布日期:1990-08-24
  • 通讯作者: 林智信
  • 基金资助:

    国家自然科学基金

Studies on Kinetics and Mechanism of Ternary Complex ——Sc-CAS-CTMAB System

Lin Zhixin, Cai Ruxiu, Hu Keren, Fang Xianan, An Congjun   

  1. Department of Chemistry, Wuhan Univerity, Wuhan
  • Received:1988-12-29 Online:1990-08-24 Published:1990-08-24

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摘要： 本文测定了CAS,Sc-CAS和Sc-CAS-CTMAB体系的吸收光谱,三元络合物组成比为Sc:CAS∶CTMAB=1∶2∶2,用动力学方法获得经验速率方程R=k[Sc(h)][CAS][CTMAB]-2,参照Eigen-Tamm机理提出了一种“胶束-溶剂笼”机理,此机理用平衡浓度法处理后,其速率方程与实验结果一致,对三元络合物的几何构型和反应模式也进行了讨论。

关键词: 三元络合物, 动力学, 机理, 胶束

Abstract: In the present paper, the absorption spectra in the CAS, Sc-CASand Sc-CAS-CTMABsystems were measured. According to equiabsorbance diagram the composition ratio;bf the ternary complex is Sc:CAS:CTMAB=1:2:2. By kinetics method the obtained results show that its rate equation is R=k[Sc(h)][CAS][CTMAB]-2. Referring to Eigen-Tamm mechanism a micelle-solvent cage mechanism is suggested. After the mechanism being treated by the equilibrium concentration method the rate equation is consistent with experimental results. The geometrical configuration of the ternary complex and reaction mode are also discussed.

Key words: Ternary complex, Kineticas, Mechanism, Micelle

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