Exchange Bias in a Dinuclear Erbium Single-Molecule Magnet Bridged by a Helicene Ligand.

ABSTRACT: We report the synthesis and magneto-structural characterization of a dimeric Er-based single-molecule magnet (Er₂) containing two [6]helicene-1,2-diol dianions as bridging ligands. Diamagnetic dilution with yttrium cations at the synthesis stage leads to a composition that can be approximated as ErY@Y₂. This enables a direct comparison of the slow magnetic relaxation of these closely related single-molecule magnets (SMMs): dimeric Er₂ with erbium-erbium magnetic interactions and ErY@Y₂ where these interactions are absent and yet the coordination sphere of the lanthanide remains identical to that in the dimer. The antiferromagnetic Er-Er interactions in Er₂ result in

SUBMITTER: Handzlik G 

PROVIDER: S-EPMC12308793 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature