Study on the Stability of Cd(��)�� Arom atic�� Diam ine�� Am inoacid Com plexes

Abstract In this paper, O benzyl tyrosine (btyr- ) Containing a big hydrophobic sidechain has been synthesized and characterized by I R spectra,the m elting point andthe elem entary analysis. The stability constant(lg��)ofthe m ixed liqands com plexesoftype [ Cd L Aa]+ ,w here L= 2,2 bipyridyl(bipy)or 1.10 phenanthroline(phen);Aa= alanine(ala- ),tyrosine(tyr- ) and o benzyl tyrosine(btyr- )has been de term ined by p H potentiom etric titration in 20% (volum e fraction) Et O H w ater solu tion( I= 0 10( K N O3),25��) According to ��lgk and thestructure ofligands,there is hydrophobic associationbetw en ligands in [ Cd( L)(btyr)]+

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Keywords�� Cadm ium (��) Arom atic Diam ine Am inoacid Com plexes

Received 1999-09-15; published 1999-09-15

Cite this article:

Yu Xiaocai Gao Enjun Shu Zhen Chen Hualing.Study on the Stability of Cd(��)�� Arom atic�� Diam ine�� Am inoacid Com plexes[J] Chemcial Industry and Engineering, 1999,V16(5): 249-252