The Thermal Deaquation-Anation Reactions of Aquopentamminechromium(III) Complexes in the Solid State

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概要

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• The thermal deaquation-anation reactions of aquopentamminechromium(III) nitrate, chloride, bromide, and iodide in the solid state were investigated by the techniques of TG, DSC, X-ray powder diffraction analysis, and manometry. The first-order rate constants were obtained by isothermal kinetics. The activation enthalpies calculated from the first-order rate constants increased in the order: the nitrate(24.3)<the chloride(26.4)<the bromide (29.7)<the iodide(30.7 kcal/mol). The enthalpy changes by DSC were 12.3, 6.5, 6.3, and 7.0 kcal/mol for the nitrate, chloride, bromide, and iodide respectively. The slight deviation from the first-order kinetics was observed in cases of the nitrate and the chloride.

• 公益社団法人 日本化学会の論文

著者

• Nagase Kenzo

  Department of Chemistry, College of General Education, Tohoku University

• Yokobayashi Hiroko

  Department of Chemistry, College of General Education, Tohoku University

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