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化学学报
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化学学报 ›› 1997, Vol. 55 ›› Issue (10): 991-997. 上一篇    下一篇

研究论文

配位化学中的直线自由能关系XXII: 铜(II)-α-氨基酸-二氧四胺大环三元体系

林华宽;朱守荣;APPOLIN, B. KONDIANO;寇福平;陈荣悌   

  1. 南开大学化学系
  • 发布日期:1997-10-15

Linear free energy relationships in coordination chemistry XXII. Cu(II)-α-aminoacids-dioxotetraamine macrocycles

LIN HUAKUAN;ZHU SHOURONG;APPOLIN, B. KONDIANO;KOU FUPING;CHEN RONGTI   

  • Published:1997-10-15

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用pH法在25.0±0.1℃, I=0.1 mol.dm^-^3 KNO3条件下研究了铜(II)-α-氨基酸-13-(2'-羟基-3', 5'-取代苄基)-1, 4,8, 11-四氮杂环十四烷-12, 14-二酮竞争性三元混配型配合物的稳定性。测定了该体系的三元配合物的稳定常数, 并讨论了二氧四胺大环配体的环空腔大小对三元配合物的构型及稳定性的影响以及大环配体上取代基对三元配合物的影响。

关键词: 氨基酸, 稳定性, 铜络合物, 自由能, 二氧四胺大环化合物

The stability of Cu(II)-α -aminoacids-13-(2'-hydroxy-3', 5'-substituted benzyl)-1, 4, 8, 11-tetraazacyclotetradecane-12, 14-dione (RTADO-14) ternary complex compounds has been studied by means of pH titration method at 25.0±0.1℃ and I=0.1 mol.dm^-^3 KNO3. The formation constants of ternary complex compounds were obtained. The structures of ternary complex compounds and the effect of substituents on macrocyclic ligands were also discussed.

Key words: AMINO ACID, STABILITY, COPPER COMPLEX, FREE ENERGY

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