引用本文:
任吉民, 牛春吉, 裴奉奎, 王文韵, 倪嘉缵. 双甘肽稀土配合物溶液结构的13C和1H NMR研究[J]. 物理化学学报,
1992, 8(02): 270-273.
doi:
10.3866/PKU.WHXB19920226
Citation: Ren Ji-Min, Niu Chun-Ji, Pei Feng-Kui, Wang Wen-Yun, Ni Jia-Zuan. 13C and 1H NMR Studies of Solution Structure of Lanthanide Complex with Glycyl-Glycine[J]. Acta Physico-Chimica Sinica, 1992, 8(02): 270-273. doi: 10.3866/PKU.WHXB19920226
Citation: Ren Ji-Min, Niu Chun-Ji, Pei Feng-Kui, Wang Wen-Yun, Ni Jia-Zuan. 13C and 1H NMR Studies of Solution Structure of Lanthanide Complex with Glycyl-Glycine[J]. Acta Physico-Chimica Sinica, 1992, 8(02): 270-273. doi: 10.3866/PKU.WHXB19920226
双甘肽稀土配合物溶液结构的13C和1H NMR研究
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关键词:
- 双甘肽; 稀土配合物; 核磁共振溶液结构
English
13C and 1H NMR Studies of Solution Structure of Lanthanide Complex with Glycyl-Glycine
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.
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