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A Theoretical Interpretation for the Difference Between Stability Constants of the Same Metal Complex Determined by Different Analytical Methods

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Abstract

The ion-exchange method tends to give higher values of the stability constant than those obtained from absorption spectrophotometry for the same complex. The reason for this difference was clarified by introducing an equation for the estimation of the amount of conversion between outer-sphere and inner-sphere binding for Mm+–Lℓ− complexes inside the hydration sphere of a sample metal cation.

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Authors and Affiliations

  1. Faculty of Education and Welfare Science, Oita University, Oita, 870-1192, Japan

    T. Nakashima

  2. Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka, 812-8581, Japan

    H. Waki & M. Toh

Authors
  1. T. Nakashima
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  2. H. Waki
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  3. M. Toh
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Correspondence to T. Nakashima.

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Nakashima, T., Waki, H. & Toh, M. A Theoretical Interpretation for the Difference Between Stability Constants of the Same Metal Complex Determined by Different Analytical Methods. J Solution Chem 39, 51–56 (2010). https://doi.org/10.1007/s10953-009-9482-4

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  • DOI: https://doi.org/10.1007/s10953-009-9482-4

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