Multidentate ligand kinetics. I. The ligand substitution reaction between ethylenediaminetetraacetatocuprate(II) and triethylenetetraminezinc(II).
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概要
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The kinetics and the mechanism of the ligand substitution reaction between ethylenediaminetetraacetatocuprate-(II)(CuY<SUP>2−</SUP>) and triethylenetetraminezinc(II)(ZnT<SUP>2+</SUP>) were studied spectrophotometrically in the pH range 7.0–10.5 at I=0.2(NaClO<SUB>4</SUB>) and 25.0 °C. The exchange reaction was accelerated by traces of either EDTA or triethylenetetramine(Trien). The exchange reaction was shown to proceed by the chain reaction mechanism where the chain-propagating steps are the reaction of CuY<SUP>2−</SUP> with Trien and the reaction of ZnT<SUP>2+</SUP> with EDTA. Each chain-propagating step was investigated. The apparent rate constant of the reaction of CuY<SUP>2−</SUP> with Trien increases with pH, while that of ZnT<SUP>2+</SUP> with EDTA decreases with pH.
- 公益社団法人 日本化学会の論文
著者
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Katsuyama Tetsuo
Department Of Chemistry And Chemical Engineering Faculty Of Engineering Yamagata University
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Kumai Toshihiko
Department of Basic Technology, Faculty of Engineering, Yamagata University
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