A europium(III)-N,N,N′,N′-tetrakis(2-pyridylmethyl)-(R)-propylenediamine complex as a new chiral lanthanide NMR shift reagent for aqueous neutral solution
Abstract
A new chiral lanthanide shift reagent [EuIIICl2{R)-tppn}]ClO4 which is structurally characterized by X-ray crystallography, resolves the enantiomer signals of α-amino acids in neutral aqueous solution and affords a good relation between the relative signal position of enantiomers and their absolute configurations.