Magnetic hysteresis and large coercivity in bisbenzimidazole radical-bridged dilanthanide complexes.

ABSTRACT: A judicious combination of radical ligands innate to diffuse spin orbitals with paramagnetic metal ions elicits strong magnetic exchange coupling which leads to properties important for future technologies. This metal-radical approach aids in effective magnetic communication of especially lanthanide ions as their 4f orbitals are contracted and not readily accessible. Notably, a high spin density on the donor atoms of the radical is required for strong coupling. Such molecules are extremely rare owing to high reactivity rendering their isolation challenging. Herein, we present two unprecedented series of bisbenzimidazole-based dilanthanide complexes [(Cp*₂Ln)₂(μ-Bbim)] (1-Ln = Gd, Tb, Dy, Bbim = 2,2'-bisbenzimidazole) and [K(crypt-222)][(Cp*₂Ln)₂

SUBMITTER: Benner F 

PROVIDER: S-EPMC10231311 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature