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Butterfly-shaped pentanuclear dysprosium single-molecule magnets
Haiquan Tian1, Lang Zhao, Haifeng Lin
1State Key Laboratory of Rare Earth, Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022 (P.R. China), Fax: (+86) 431 85262878; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002 (P.R. China).
Chemistry (Weinheim an Der Bergstrasse, Germany)
|August 13, 2013
Summary
Two novel butterfly-shaped dysprosium(III) clusters were synthesized, exhibiting distinct magnetic properties due to ligand coordination. This research offers insights into designing advanced magnetic materials.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Magnetochemistry
Background:
- Dysprosium(III) clusters are investigated for their magnetic properties.
- Tailoring ligand environments is crucial for controlling magnetic behavior in lanthanide clusters.
Purpose of the Study:
- Synthesize and characterize novel pentanuclear dysprosium(III) clusters.
- Investigate the influence of ligand coordination and tautomerism on magnetic properties.
Main Methods:
- Synthesis of dysprosium(III) clusters using o-vanillin pyrazine acylhydrazone (H2opch).
- Single-crystal X-ray diffraction for structural determination.
- Magnetic property measurements, including slow magnetic relaxation analysis.
Main Results:
- Two "butterfly-shaped" pentanuclear dysprosium(III) clusters were synthesized.
- Compound 1 exhibited dual slow-relaxation processes, while compound 2 showed a single relaxation process.
- Significant differences in magnetic properties were attributed to ligand coordination and keto-enol tautomerism.
Conclusions:
- The versatile coordination of H2opch ligands significantly impacts the magnetic properties of dysprosium(III) clusters.
- Keto-enol tautomerism of the ligand influences the crystal field and magnetic anisotropy.
- These findings contribute to the rational design of single-molecule magnets.
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