Studies on the Sulfur-containing Chelating Agents. XXXIV. Determination of Stability Constant of Mercury Complex of Monothiodibenzoylmethane and Monothiothenoyltrifluoroacetone by Solvent Extraction Method
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概要
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Stability constants and extraction constants of mercury complexes of monothiodibenzoylmethane (SBB) and monothiothenoyltrifluoroacetone (STTA) were determined by the solvent extraction method in the presence of cyanide ion as the auxiliary complexing agent. Chloroform was used as the solvent. These values were compared with those of mercury dithizonate. Stability constant (log K) of mercury complexes decreases in the order, dithizone (42.5) ≈ SBB (41.8) > STTA (33.0), whereas extraction constant (log K') of mercury complexes decreases in the order, dithizone (25.2) > STTA (19.6) ≈ SBB (19.3). As far as the extractability is concerned, SBB and STTA may not be regarded as better reagents than dithizone. However, SBB is regarded as more advantageous reagent than dithizone and STTA, because of its stability in highly diluted solution.
- 公益社団法人日本薬学会の論文
- 1972-09-25
著者
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田中 久
Faculty of Pharmaceutical Sciences, Kyoto University
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横山 陽
Faculty of Pharmaceutical Sciences, Kyoto University
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中西 信子
Faculty of Pharmaceutical Sciences, Kyoto University
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横山 陽
Department Of Radiopharmaceutical Chemistry Faculty Of Pharmaceutical Sciences Kyoto University
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中西 信子
Faculty Of Pharmaceutical Sciences Kyoto University
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