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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 shu

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

1.
Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022

Received Date: 28 December 1990
Available Online: 15 April 1992

~(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.
- Glycyl-Glycine; Lanthanide complex; Solution structure; Nuclear magnetic resonance
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13C and 1H NMR Studies of Solution Structure of Lanthanide Complex with Glycyl-Glycine

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