An organolanthanide(iii) single-molecule magnet with an axial crystal-field: influence of the Raman process over the slow relaxation

Abstract

Here, we report the synthesis and magnetic properties investigation of a series of new organometallic homoleptic complexes Li(DME)₃[Ln(DAD)₂] (Ln = Dy (1a, 1b), Tb(2), and Er(3)) based on paramagnetic Ln(III) ions coordinated by an ene-diamido[2,6-iPr₂C₆H₃N–CHCH–NC₆H₃iPr₂-2,6]²⁻ (DAD) ligand. Dy-based compounds exhibit a genuine single-molecule magnet (SMM) behaviour, while the Tb³⁺ analogue shows a field-induced slow relaxation of the magnetisation.