Multifunctional Dy Complexes with Triphenylmethanolates: Structural Diversity, Luminescence, and Magnetic Relaxation.

The coordination environment of magneto-luminescent Dy-based Single-Molecule Magnets (SMM) is a crucial factor influencing both magnetic and luminescent properties. In this work, we explore how triphenylmethanolate (PhCO), in combination with other ligands, can modulate the structure and, therefore, the magnetic properties of Dy-based SMM. Using triphenylmethanolate in combination with THF and pyridine (Py) as co-ligands, we synthesized a series of mononuclear -[Dy(OCPh)(THF)][BPh]·(2,6-MeCHN) (), -Dy(OCPh)(THF) (), -Dy(OCPh)(py) () and dinuclear [(PhCO)Dy(THF){(μ-Cl)Li(THF)}μ-Cl] () complexes where the Dy ion presents five- or six-coordinate geometries.