High-nuclearity lanthanide(III) complexes as single-molecule magnets and luminescent materials
Abstract
The employment of the bridging/chelating Schiff base ligands, N-salicylidene-o-aminophenol (saphH2), N-salicylidene-o-aminocyclohexanol (sachH2) and N-salicylidene-2-amino-5-chlorobenzoic acid (sacbH2), in lanthanide (LnIII) cluster chemistry has afforded four families of polynuclear and dinuclear complexes with new structural motifs, and interesting magnetic and optical properties. Chapter 1 deals with most of the fundamental aspects within the areas of polynuclear metal complexes, molecular magnetism and optics as these are applied to 4f-metal based systems, while the research results are reported in Chapters 2, 3 and 4. In the first project (Chapter 2), the coordination chemistry of the organic chelating/bridging ligand, N-salicylidene-o-aminophenol (saphH2) in lanthanide cluster chemistry was investigated. The general LnIII/X-/saphH2/base reaction system has led to a family of (NHEt3)[Ln7(OH)2(saph)10(Me2CO)2] (Ln = Gd (1); Tb (2); Dy (3)) clusters with a new core topology that com ...
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