Solid Complex Formation of Aminomalonic Acid with Glycine

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概要

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• It was found by X-ray analysis that aminomalonic acid forms a solid complex with glycine in a molar ratio of 1 : 1 on crystallization from an aqueous solution. DTA-TGA of the solid complex at a heating rate of 1.0°C/min in air showed that the solid complex decarboxylates at higher temperature, but more slowly than aminomalonic acid and that both endothermic and following exothermic peaks which were distinctly observed in the region of decarboxylation of aminomalonic acid at temperatures 108–140°C are only slightly observed at 168–175°C. Activation energies in the thermal decomposition of aminomalonic acid and the solid complex, caluculated from themogravimetric curves, were 69.4 kcal/mol and 21.3 kcal/mol, respectively. The results indicate that aminomalonic acid is thermally more stabilized than the acid itself by forming the solid complex with glycine.

• 公益社団法人 日本化学会の論文

著者

• Nishijo Juziro

  Department of Physical Chemistry, Kobe Pharmaceutical University

• Hashizume Genzo

  Department of Chemistry, Faculty of Science, Kobe University

• Kinugasa Toshio

  Department of Chemistry, Faculty of Science, Kobe University

• Imanishi Isamu

  Department of Chemistry, Faculty of Science, Kobe University

• Nishijo Juziro

  Department of Chemistry, Faculty of Science, Kobe University

関連論文

• Solid Complex Formation of Aminomalonic Acid with Glycine

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