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Updated: May 2, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
Slow relaxation in the first penta-aza Dy(III) macrocyclic complex
Emma L Gavey1, Yassine Beldjoudi, Jeremy M Rawson
1Department of Chemistry, Brock University, 500 Glenridge Avenue, Ontario L2S 3A1, Canada. mpilkington@brocku.ca.
A novel dysprosium(III) macrocyclic complex exhibits slow magnetic relaxation, indicating potential for future magnetic materials. This discovery in coordination chemistry opens avenues for advanced molecular magnetism research.
Area of Science:
- Coordination Chemistry
- Molecular Magnetism
- Inorganic Chemistry
Background:
- Macrocyclic ligands offer unique coordination environments for metal ions.
- Lanthanide complexes are of interest for their magnetic properties.
Purpose of the Study:
- To synthesize and characterize a new dysprosium(III) macrocyclic complex.
- To investigate the magnetic properties of the prepared complex.
Main Methods:
- Synthesis of the DyCl3(LN5)·4H2O complex.
- Ac susceptibility measurements to probe magnetic relaxation.
Main Results:
- A new N5-donor macrocyclic complex containing a Dy(III) ion was successfully prepared.
- Ac susceptibility data indicated slow relaxation of magnetization below 15 K in zero field.
- A distribution of relaxation rates was observed, characteristic of complex magnetic behavior.
Conclusions:
- The Dy(III) macrocyclic complex displays slow magnetic relaxation, a key property for potential single-molecule magnet applications.
- Further studies are warranted to explore the structure-property relationships and optimize performance for magnetic applications.
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