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Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
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Unprecedented ferromagnetic Gdnitronyl nitroxide coupling through a hydrogen bonding bridge.
1Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China. llicun@nankai.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|July 21, 2017
Summary
Researchers created a new chain of gadolinium(iii) and nitronyl nitroxide. They discovered a novel ferromagnetic coupling between the gadolinium ion and nitroxide group, mediated by hydrogen bonding.
Area of Science:
- Materials Science
- Magnetochemistry
- Coordination Chemistry
Background:
- Lanthanide(iii) ions are key components in developing molecular magnets.
- Nitronyl nitroxide radicals are known for their magnetic properties.
- Exploring novel magnetic interactions in lanthanide-based materials is an active research area.
Purpose of the Study:
- To synthesize and characterize a novel lanthanide(iii)-nitronyl nitroxide chain.
- To investigate the magnetic coupling between the gadolinium(iii) ion and the nitroxide group.
- To explore the role of hydrogen bonding in mediating magnetic interactions.
Main Methods:
- Chemical synthesis of the lanthanide(iii)-nitronyl nitroxide chain.
- Single-crystal X-ray diffraction for structural characterization.
- Magnetic susceptibility measurements to determine magnetic properties.
Main Results:
- A novel chain {[Gd(hfac)3(Nit-Ph-3,5-bIm)(H2O)]·C4H10O}n was successfully prepared and characterized.
- An unexpected ferromagnetic coupling between the gadolinium(iii) ion and the nitroxide group was observed.
- This coupling was found to be mediated by hydrogen bonding, a previously unobserved phenomenon.
Conclusions:
- The study reports the first instance of ferromagnetic coupling between a gadolinium(iii) ion and a nitroxide group mediated by hydrogen bonding.
- This finding opens new avenues for designing molecular magnets with tailored magnetic properties.
- The role of hydrogen bonding in magnetic interactions warrants further investigation in related systems.
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