The structures and magnetic properties of complexes containing 3d- and 4f-metals

Abstract

Heterometallic complexes containing 3d-/4f-metals have been made with a variety of ligands including Schiff-bases, pyridonates and amino-alcohols. The majority of species with Schiff-base ligands are trinuclear with Cu₂Ln cores, and with other ligands larger oligomers are found, ranging as large as Cu₁₂La₈ and Cu₁₂Ln₆ clusters (Ln = Y, Nd, Sm or Gd). The magnetic properties displayed by these polynuclear species are discussed, and the magnetic coupling between Cu^II and Gd^III is always found to be ferromagnetic.