AI Article Synopsis
- New diradical rare-earth metal complexes were synthesized using diazabutadiene ligands, creating a unique structure with a square-pyramidal shape.
- The complexes exhibit antiferromagnetic coupling between radicals and demonstrate strong single-molecule-magnet behavior with a high energy barrier of 231 K.
- The research highlights the importance of the anionic [N(TMS)] group in enhancing the single-molecule-magnet properties, paving the way for future advancements in this area.
Article Abstract
New kinds of diradical rare-earth metal complexes supported by diazabutadiene (DAD) ligands, [(DAD)LnN(TMS)] (; Ln = Dy, Lu; TMS = SiMe), were synthesized and studied. They showed a new [radical-Ln-radical] alignment with distorted square-pyramidal geometry. Structural and density functional theory analysis illustrated the radical anionic nature of the ligands. Magnetic studies revealed antiferromagnetic coupling of the two radicals in . showed typical single-molecule-magnet (SMM) behavior with an effective energy barrier of 231 K, which is much higher than those of similar radical-containing SMMs. Magnetostructural analysis suggests that the anionic [N(TMS)] group plays a vital role in the SMM property. This study provides a new platform for further improving the performance of radical-Ln SMMs.
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| http://dx.doi.org/10.1021/acs.inorgchem.0c03534 | DOI Listing |
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