Coordination of Rare Earth with Glycyl-L-Leucine

Chinese Journal of Applied Chemistry ›› 1995, Vol. 0 ›› Issue (3): 9-12.

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Coordination of Rare Earth with Glycyl-L-Leucine

Zhao Shufu, Tian Zaifeng, Wang Zenglin, Yang Kuiyue, Niu Chunji, Ni Jiazuan

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

Received:1994-08-16 Revised:1994-11-30 Published:1995-06-10 Online:1995-06-10

Abstract

Abstract: 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 rareearth can form 1:1 coordination compounds with glycyl-L-leucine at the studied range ofpH.There is an obvious "tetrad effect", in the system.Yttrium position and the effect ofpeptide bond on the complex stability were discussed.

Key words: rare earth complex, glycyl-L-leucine, pH potentiometry

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, 0(3): 9-12.

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Coordination of Rare Earth with Glycyl-L-Leucine

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