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Citation: Zhao Shufu, Tian Zaifeng, Wang Zenglin, Yang Kuiyue, Niu Chunji, Ni Jiazuan. Coordination of Rare Earth with Glycyl-L-Leucine[J]. Chinese Journal of Applied Chemistry, ;1995, 12(3): 9-12. shu

Coordination of Rare Earth with Glycyl-L-Leucine

Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 16 August 1994
Revised Date: 30 November 1994

Protonation constants of the title ligand as well as stability constants of its com-plexes with rare earth elements were determined by pH potentiometric titration in the physio-logical conditions and at 25℃,I=0.10mol/L respectively. The results indicate that the rare earth can form 1:1 coordination compounds with glycyl-L-leucine at the studied range of pH. There is an obvious "tetrad effect" in the system. Yttrium position and the effect of peptide bond on the complex stability were discussed.
- rare earth complex,
- glycyl-L-leucine,
- pH potentiometry
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