アミノ酸金属キレートの研究 (第1報)
N-Ethylidene-DL-threonine銅キレート中の揮発物について
1961 年 81 巻 6 号 p. 819-823
詳細
1961 年 81 巻 6 号 p. 819-823
Application of acetaldehyde to threonine-copper chelate gives two kinds of crystals, α and β. In order to elucidate their structure and properties, measurement with thermobalance was carried out. Weight-loss curve at the time of heating of the substance showed ca. 9.5% loss in both α- and β-crystals, and this decrease was found to correspond to 2 moles of water of crystallization. The fact was also confirmed by recovery of the original weight by application of water vapor to the substance with decreased weight caused by heating. Dissociation pressure did not show a great value and dissociation energy was found to be similar to that of crystal water. Analysis of the volatile matter produced on heating showed it to be water.
