Using Ln~(III)[15-MC_(cu~(II))(N)(s)-pheHA-5]~(3+) Complexes To Construct Chiral Single-Molecule Magnets and Chains of Single-Molecule Magnets

摘要

The {Dy~(III)[15-MC-(cu~(II))(N)(s)-pheHA-5]}~(3+) complex displays slow magnetic relaxation behavior in a frozen solution at low temperature,whereas the analogous Ho~(III) structure does not exhibit similar behavior.Metallacrowns (MCs) provide a convenient geometry that allows for a high density of metal atoms to be placed in a small volume.In addition,the molecular topology of these clusters allows the single-ion-anisotropy axes to be aligned,leading to large,axial molecular anisotropies.