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对于镉碘体系的络合物所进行的研究工作,在数量上已经可以说是相当多的了。我们之所以要对这一体系重新进行研究,主要是由于在这一体系进行研究后所累积起来的资料中,还存在着一些悬而未决的问题。 (1)根据以往许多文献的记载,在溶液中,最多只测得[CdI_4]~(-2)的生成常数。曾借极谱法测得了[CdI_6]~(-4)的生成常数,但是由于在他的工作中没有维持离子强度,而且处理方法亦较粗略,因此这一工作没有引起足够注意。最近,张正斌由于采用
The research work on the complex of cadmium iodine system can be quite quantitative in quantity. The reason why we want to re-study this system is mainly due to some outstanding issues in the accumulated information after the system is studied. (1) According to many references in the past, only the formation constant of [CdI_4] ~ (-2) was measured in solution. The generation constants of [CdI_6] ~ (-4) were measured by polarography, but this work did not attract enough attention because of the lack of ionic strength in his work and the cumbersome treatment. Recently, Zhang Zhengbin due to adoption