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Updated: May 12, 2026
06:53
Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
A dysprosium alkylidene single molecule magnet.
Yin-Cong Kong1, Zi Yang1, Yi Liu1
1School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, P. R. China. wangchen0@whut.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|May 11, 2026
Summary
Researchers synthesized a novel dysprosium alkylidene complex, achieving the shortest Dy-C bond and demonstrating single-molecule magnet (SMM) properties. This highlights a promising strategy for developing advanced magnetic materials.
Area of Science:
- Organometallic Chemistry
- Materials Science
- Magnetism
Background:
- Single-molecule magnets (SMMs) are crucial for developing advanced magnetic materials.
- Dysprosium complexes are promising candidates for SMMs due to their magnetic properties.
- Controlling the Dy-ligand bond is essential for optimizing SMM performance.
Purpose of the Study:
- To synthesize and characterize a novel dysprosium alkylidene complex.
- To investigate the magnetic properties and structure-property relationships of the complex.
- To explore the role of the Dy-C bond in enhancing SMM behavior.
Main Methods:
- Synthesis and characterization of a dysprosium alkylidene complex with a β-diketiminato ligand.
- Magnetic measurements to determine SMM properties, including effective activation barrier (Ueff).
- Ab initio calculations to analyze electronic structure, crystal-field effects, and magnetic anisotropy.
Main Results:
- The synthesized complex exhibited the shortest reported Dy-C bond length (2.266(3) Å).
- The complex demonstrated potent single-molecule magnet behavior with an effective activation barrier (Ueff) of 305 K.
- Calculations revealed high crystal-field axiality and strong magnetic anisotropy, with relaxation occurring via excited states.
Conclusions:
- The Dy-C bond significantly benefits the molecular magnetism of dysprosium alkylidene SMMs.
- Creating dysprosium complexes with a Dy-ligand multiple bond is a viable strategy for achieving uniaxial magnetic anisotropy.
- This research provides insights into designing high-performance dysprosium-based single-molecule magnets.
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