Rate of ligand exchange of tris(acetylacetonato)iron(III) with 2-thenoyltrifluoroacetone in organic solvents.
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概要
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The rate of exchange of acetylacetonate ions (acac<SUP>−</SUP>) in tris(acetylacetonato)iron(III) with 2-thenoyltrifluoro-acetonate ions (tta<SUP>−</SUP>) has been measured in several organic solvents. The rate was independent of the concentration of Hacac and Htta and nearly the same in carbon tetrachloride, benzene, acetone, and 4-methyl-2-pentanone. However, the rate was much greater in ethanol. The rate of exchange in carbon tetrachloride, benzene, and acetone was found to be enhanced by water, ethanol, and several acids. The enhancement was smaller in acetone than in nonpolar solvents and the stronger the acid, the greater the catalytic effect. The rate controlling step of the exchange reaction was the rupture of an acetylacetonate ion from iron(III) in the complex. These observations have been discussed and possible mechanisms proposed.
- 公益社団法人 日本化学会の論文
著者
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Honda Hiroshi
Department Of Agricultural Chemistry Tokyo University Of Agriculture
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Tosaka Teruyuki
Department of Chemistry, Science University of Tokyo
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Sekine Tatsuya
Departemnt of Chemistry, Science University of Tokyo
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Kokiso Masakazu
Department of Chemistry, Science University of Tokyo
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