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Thermodynamic Discrimination in the Formation of Tetranuclear Lanthanide Helicates
Author(s) -
Zebret Soumaila,
Besnard Céline,
Bernardinelli Gérald,
Hamacek Josef
Publication year - 2012
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201200004
Subject(s) - lanthanide , chemistry , ligand (biochemistry) , solid state , luminescence , chemical stability , genetic algorithm , stability constants of complexes , crystallography , inorganic chemistry , stereochemistry , organic chemistry , receptor , ion , optoelectronics , evolutionary biology , aqueous solution , biology , physics , biochemistry
The complexation of lanthanide cations with a tripodal ligand bearing terminal ester functions was investigated. Thermodynamic speciation was achieved by a combination of different physicochemical methods, and the stability constants of the related complexes were determined spectrophotometrically. The formation of tetranuclear 3D edifices occurs preferentially with heavier lanthanides. Their molecular structure was confirmed by X‐ray crystallography. Solid‐state luminescence properties of the Eu III and Tb III compounds were also examined.