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Updated: Jul 10, 2026
10:44
Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
Spin-canting in heavy atom heterocyclic radicals.
Alicea A Leitch1, Jaclyn L Brusso, Kristina Cvrkalj
1Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
Chemical Communications (Cambridge, England)
|November 21, 2007
Summary
Two isostructural radical conductors, bis-selenathiazolyl and bis-diselenazolyl, exhibit weak ferromagnetism. These materials show distinct critical temperatures (Tc) of 18 K and 27 K, respectively.
Area of Science:
- Materials Science
- Solid-State Physics
- Chemistry
Background:
- Radical conductors are materials with unpaired electrons, often exhibiting unique electronic and magnetic properties.
- Isostructural compounds allow for direct comparison of how structural modifications influence physical properties.
Purpose of the Study:
- To investigate the magnetic properties of isostructural bis-selenathiazolyl and bis-diselenazolyl radical conductors.
- To determine the critical temperatures (Tc) associated with magnetic ordering in these materials.
Main Methods:
- Synthesis of isostructural bis-selenathiazolyl and bis-diselenazolyl radical conductors.
- Magnetic susceptibility measurements to identify magnetic ordering and critical temperatures.
Main Results:
- Both radical conductors displayed weak ferromagnetism.
- The bis-selenathiazolyl compound exhibited a critical temperature (Tc) of 18 K.
- The bis-diselenazolyl compound showed a higher critical temperature (Tc) of 27 K.
Conclusions:
- Isostructural radical conductors can exhibit weak (spin-canted) ferromagnetism.
- Subtle changes in chalcogen atoms (selenium vs. diselenium) influence the magnetic ordering temperature in these systems.
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