Discrete {GdIII4M} (M = GdIII or CoII) pentanuclear complexes: a new class of metal-organophosphate molecular coolers

Abstract

The first examples of homo- and hetero-polymetallic organophosphates of gadolinium are reported. Magnetic measurements reveal a higher magnetic entropy change for the isotropic {Gd^III₅} complex (25.8 J kg⁻¹ K⁻¹) as compared to the heterometallic {Gd^III₄Co^II} complex (20.3 J kg⁻¹ K⁻¹), which is attributable to a change in magnetic coupling as estimated from DFT calculations.