Extraordinary kinetic inertness of lanthanide( <scp>iii</scp> ) complexes of pyridine-rigidified 18-membered hexaazamacrocycles with four acetate pendant arms
Jan Faltejsek, Peter Urbanovský, Vojtěch Kubíček, Jana Havlíčková, Ivana Cı́sařová, Jan Kotek, Petr Hermann
Abstract
With Ln 3+ ions, the H 4 pyta forms isomeric complexes having CN 10 or 9, and the ten-coordinated complexes are up to 10 4 times more kinetically inert than the Ln( iii )–H 4 dota complexes.
Topics & Concepts
ChemistryLanthanideProtonationPyridineLigand (biochemistry)MetalDissociation (chemistry)CrystallographyIonAcetic acidMetal ions in aqueous solutionStereochemistryMedicinal chemistryPhysical chemistryOrganic chemistryReceptorBiochemistryLanthanide and Transition Metal ComplexesRadioactive element chemistry and processingRadiopharmaceutical Chemistry and Applications