Polarography of Halides in Dimethylformamide. III. The Chloride Ion, the Trichloromercurate Ion, and Mercuric Chloride
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概要
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The polarographic behavior of the chloride ion at the dropping mercury electrode was investigated in dimethylformamide. The chloride ion gives two diffusion-controlled anodic waves. On the basis of the analysis of the waves, the first anodic wave can be ascribed to the reversible oxidation of mercury to form either the tri- or the tetrachloromercurate ion. At the more negative part of the potential in the wave, where the concentration of the chloride ion on the mercury drop is much higher than that of the mercuric ion dissolved, the higher complex species, <I>i.e.</I>, the tetrachloromercurate ion, is the main product of the electrode reaction. As the potential of the dropping electrode shifts toward less negative potentials, the concentration of the chloride ion at the electrode surface decreases more and more and the formation of the trichloromercurate ion becomes predominant. When a constant diffusion current is attained, only the trichloromercurate ion is formed and the formation of the tetrachloromercurate ion can be neglected. On the other hand, the second anodic wave can be ascribed to the reversible oxidation of mercury to mercuric chloride.
- 公益社団法人 日本化学会の論文
著者
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MATSUI Yoshihisa
Department of Life Science and Biotechnology Faculty of Life and Environmental Science Shimane Unive
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Date Yoshio
Department of Agricultural Chemistry, Faculty of Agriculture, Shimane University
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Kurosaki Yukio
Department of Agricultural Chemistry, Faculty of Agriculture, Shimane University
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Matsui Yoshihisa
Department of Agricultural Chemistry, Faculty of Agriculture, Shimane University
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