Reaction Rates and Mechanisms of the Formation of Gallium(III), Indium(III), and Thallium(III) Complexes with Semi-Xylenol Orange in Aqueous Solutions
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概要
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The kinetics for the complex formation of Ga(III), In(III), and Tl(III) with Semi-Xylenol Orange (SXO) in acid solutions were studied by stopped-flow technique. Kinetic results are interpreted in terms of a two-step mechanism involving pre-equilibrium. The increase in the reaction rate with decreasing hydrogen ion concentration is interpreted as the sum of several parallel pathways including monohydroxo metal ions and a few charge types of the ligand. The mechanisms and the rates of the three different <I>d</I><SUP>10</SUP>-system metal ions are discussed. The phenomena of the slower increase in absorbance of Ga(III)-SXO complex after the rapid increase and the slow color fading of Tl(III)-SXO complex are also discussed.
- 公益社団法人 日本化学会の論文
著者
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Imamura Taira
Department Of Chemistry Faculty Of Science Hokkaido University
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Nakayama Hiroaki
Department Of Bacteriology Faculty Of Medical Sciences Kyushu University
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FUJIMOTO Masatoshi
Department of Chemistry, Faculty of Science, Hokkaido University
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Takahashi Tetsuro
Department of Chemistry, Faculty of Science, Hokkaido University
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HAYASHI Katsuyuki
Department of Agricultural Chemistry, Faculty of Agriculture, Shizuoka University
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Kawai Yoichi
Department of Chemistry, Faculty of Science, Hokkaido University
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