物理化学学报 >> 1992, Vol. 8 >> Issue (02): 270-273.doi: 10.3866/PKU.WHXB19920226

研究简报 上一篇    下一篇

双甘肽稀土配合物溶液结构的13C和1H NMR研究

任吉民; 牛春吉; 裴奉奎; 王文韵; 倪嘉缵   

  1. 中国科学院长春应用化学研究所,长春 130022
  • 收稿日期:1990-12-28 修回日期:1991-05-07 发布日期:1992-04-15
  • 通讯作者: 裴奉奎

13C and 1H NMR Studies of Solution Structure of Lanthanide Complex with Glycyl-Glycine

Ren Ji-Min; Niu Chun-Ji; Pei Feng-Kui; Wang Wen-Yun; Ni Jia-Zuan   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-12-28 Revised:1991-05-07 Published:1992-04-15
  • Contact: Pei Feng-Kui;

关键词: 双甘肽, 稀土配合物, 核磁共振溶液结构

Abstract: ~(13)C and ~1H NMR technique was used to study the interaction of Gly-Gly with heavy lanthanide cations Dy~(3+), Ho~(3+), Er~(3+), Tm~(3+) and Yb~(3+) in aqueous solution. The stability constants for the 1:1 and 1:2 complexes of Gly-Gly with Ho~(3+) and Yb~(3+) were determined from the titration curves of chemical shift versus concentration ratio of lanthanide to Gly-Gly. The solution structure of the Ln-Gly-Gly complex was analyzed based upon the ~(13)C and ~1H lanthanide-induced shifts and the results show that in the complex Gly-Gly is coordinated to the lanthanide ion through the carboxyl oxygens with the backbone of the ligand in an extended state.

Key words: Glycyl-Glycine, Lanthanide complex, Solution structure, Nuclear magnetic resonance