A Trinuclear Eu~III Array within a DiastereoselectIVely Self-Assembled Helix Formed by Chiral Bipyridine-Carboxylate Ligands

摘要

Owing to their structural,magnetic,and emissIVe properties,complexes of lanthanide(Ln)ions with chiral ligands have found use as 1)asymmetric catalysts and 2)probes for the characterization of ionic or chiral environments.However,in view of the lability and the weak coordination preferences of the Ln~III centers,the synthesis of stable "true" enantio-pure lanthanide coordination compounds,in which all the chirality sources(ligand,metal centers,supramolecular chirality)are fixed,represents a difficult goal.