Polarographic Study of the Substitution Reactions between Nickel(II) Ions and Copper(II) Chelates of Triethylenetetraminehexaacetic Acid

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概要

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• The mechanism of substitution reaction between nickel ion and Cu–TTHA chelate was studied by polarographic technique. During the study of the substitution reaction the existence of mixed binuclear chelate CuXNi<SUP>2−</SUP> was verified and the value of the stability constant was calculated on the basis of polarographic data. Formation of the mixed binuclear chelate was further verified by the amperometric tit ration of the equimolar mixture of both metal ions with TTHA. Finally the existence of mixed binuclear chelate CuXNi<SUP>2−</SUP> was verified by potentiometric titration method. When nickel is present in large excess the replacement of Cu<SUP>2+</SUP> ions from Cu<SUB>2</SUB>X<SUP>2−</SUP> occurred directly without formation of intermediate mixed binuclear chelate. The stability constant of Cu<SUB>2</SUB>X<SUP>2−</SUP> was calculated from equilibrium study.

• 公益社団法人 日本化学会の論文

著者

• Haque Md.

  Department of Chemistry, Bangladesh Agricultural University

関連論文

• Polarographic Study of the Substitution Reactions between Nickel(II) Ions and Copper(II) Chelates of Triethylenetetraminehexaacetic Acid

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