Synthesis and crystal structure of a gadolinium(III) complex of a tetraimine schiff-base macrocycle: A potential contrast agent for magnetic resonance imaging

Abstract

A gadolinium(III) complex of an 18-membered hexa-aza macrocycle, with relaxivities higher than [Gd(DTPA)(H 2O)] 2− and [Gd(DOTA)(H 2O)] −, has been synthesized and its crystal structure indicates a nine-coordinate gadolinium ion bound to three water oxygen atoms and six nitrogen donors from the macrocyclic ligand.