Open AccessStructural studies of lanthanide(III) complexes with oxydiacetic acid and iminodiacetic acid in aqueous solution by EXAFS
Author(s) -
Yaita Tsuyoshi,
Narita Hirokazu,
Suzuki Shinichi,
Takai Konomi,
Tachimori Shoichi,
Motohashi Haruhiko
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049500017180
Subject(s) - iminodiacetic acid , extended x ray absorption fine structure , aqueous solution , lanthanide , chemistry , coordination number , crystallography , bond length , spectroscopy , ether , coordination complex , inorganic chemistry , absorption spectroscopy , ion , crystal structure , chelation , metal , organic chemistry , physics , quantum mechanics
The local structure of the trivalent lanthanide (Ln(III)) complexes with oxydiacetic acid (ODA) and iminodiacetic acid (IDA) in aqueous solution was investigated by EXAFS spectroscopy. The coordination number and the bond distance were obtained by the detailed EXAFS analysis. The coordination number of Ln(III) in both the Ln‐ODA and ‐IDA systems decreases from nine for lighter Ln(III) to eight for heavier Ln(III). The bond distances of ether O atoms from Ln(III) in the Ln(ODA) 3 3‐ complexes are shorter than those of N atoms in the Ln(IDA) 3 3‐ ones.