change. The CD loss of the optically active u-fac isomer is caused by the isomerization process of u-fac\ightleftharpoonsmer. The isomerization of the [Co(ida)2]− system has also been measured, and the rate data analysed according to the same scheme as that used for the [Co(ida)(mida)]− system. It is suggested that the isomerizations of the [Co(ida)(mida)]− and [Co(ida)2]− systems proceed through a conjugatebase
                                    在碱性
水溶液中研究了 [Co(ida)(mida)]- 的三种几何异构体之间的异构化反应。已经发现反应方案是u-fac\ightleftharpoonsmer\ightleftharpoonss-fac。这些异构化路径的速率已被确定为 pH 值和温度的函数。u-fac\ightleftharpoonsmer 变化的速度比 mer\ightleftharpoonss-fac 变化快得多。光学活性 u-fac 异构体的 CD 损失是由 u-fac\ightleftharpoonsmer 的异构化过程引起的。[Co(ida)2]- 系统的异构化也已被测量,并根据与 [Co(ida)(mida)]- 系统相同的方案分析速率数据。建议 [Co(ida)(mida)]- 和 [Co(ida)2]- 系统的异构化通过共轭碱中间体进行。