Guan-Lin Lu, Shih-Ting Chiu, Po-Heng Lin, Jérôme Long
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Modulating Magnetic Anisotropy in Linear Tetranuclear Dysprosium(III) Complexes via Coordinated Anions
We report the synthesis, structures, and magnetic properties of two novel linear tetranuclear complexes with the general formula [Dy₄(Hheb)2(heb)4X₂(MeOH)₄] (X⁻ = NO₃⁻, OAc⁻; H2heb = (E)-N'-(1-(2-hydroxyphenyl)ethylidene)benzohydraz, OAc− = acetate). The rigid ligands (Hheb−/heb2−) incorporates phenoxide groups and bridge the Dy³⁺ ions in an unusual tetranuclear linear assembly. Notably, we demonstrate through magnetic measurements and theoretical calculations how the coordinated anion (X) coordinated at the peripheral Dy³⁺ centers acts as a switch, significantly changing the magnetic anisotropy of the entire complex. This control over magnetic anisotropy through the selection of the coordinated anion offers a promising avenue for tailoring the functionality of Single-Molecule Magnets.
期刊介绍:
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.