Regioselectively N-Functionalised 14-Membered Azapyridinomacrocycles Bearing Trialkanoic acid Side Chains as Ligands for Lanthanide Ions

摘要

Four 14-membered azamacrocycles 2a-d,each containing a pyridine moiety and three acetic andor propionic acid pendent arms,were prepared from regioselectively func-tionalised polyamines.The stability constants of the lanthanide complexes(La,Pr,Nd,Eu,Gd,Tb,Er,Yb,Lu)formed with the triacetic acid compound 2a were determined by spectroscopic methods(luminescence and/or UV/Vis spectroscopy).Other characteristics of the luminescent Eu~III and Tb~III complexes formed with the triacetic acid derivative 2a were also evaluated.