Balance between Crystal Field and Phonon Optimization in Defining the Magnetic Properties of Lanthanide Dichalcogenoimidodiphosphinate Complexes.

ABSTRACT: Single-molecule magnets (SMMs) offer promise for high-density data storage, but suppressing fast magnetization relaxation remains a key challenge in synthetic design. Changing coordinating atoms across a group offers an avenue to control the phononic spectrum and crystal field. We report dysprosium(III) and erbium(III) tris(tetraphenyl-dichalcogenoimidodiphosphinate) complexes with O (1-Ln), S (2-Ln), or Se (3-Ln) donors, examining their influence on the anisotropy and relaxation behavior. The products exhibit distinct geometries, 6-coordinate 1-Ln, 9-coordinate 2-Ln, and 3-Ln complexes that vary from 9-coordinate 3-Tb to 7-coordinate 3-Er and 3-Dy. The geometry dominates the vibrational effects in defining the magnetic relaxat

SUBMITTER: Carneiro Neto JS 

PROVIDER: S-EPMC12606704 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature