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Citation: Sun Yuanhong, Wu Dengguo, Zhang Shugong. STUDIES ON L-CYSTEINE COMPLEXES OF LANTHANIDE CHLORIDES-ITS'PREPARATION, FT-IR ANO XPS[J]. Chinese Journal of Applied Chemistry, ;1989, 6(6): 32-37. shu

STUDIES ON L-CYSTEINE COMPLEXES OF LANTHANIDE CHLORIDES-ITS'PREPARATION, FT-IR ANO XPS

1.
1. Department of Chemistry, Inner Mongolia University Huhhot;
2.
2. Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 26 November 1988
Available Online: 29 March 1989

Fourteen complexes of rare earth trichloride with L-cysteine were preparecd from aq.ethanol solution (Cc complex from aq. n-butanol) at pH3.5. The compounds have structu-ral formula RE(cys)₃Cl₃.3H₂O(RE=Cc-Lu and Y,except Pm). The main infrared absorp-tion bands have been assigned. All the compounds may be classified into three groups: (1) complex of Ce which is a chain polynuclear complex with bridging bidentate ligand;(2)complexes of Pr-Ho and Y which are mononuclear complexes containing unidentate and che-lating bidentate ligands;(3) complexes of Er-Lu are the polymer containing unidentate,chelating bidentate and chelation-bridging tridentate ligands. Ln-O stretch vibration wereobserved at 412-428cm^-1 and 169-197cm^-1 The XPS study of Er-Lu complexes showsthat the atoms of oxygen are coordinated to lanthanide ions. but chloride anions are notcoordinated.
- Rerc carth complex,
- L-cysteine,
- FT-IR,
- XPS
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