A Spontaneous Magnetic Moment in an Organic Radical: Synthesis and Characterization of Benzodioxepinyl-1,3,2-dithiazolyl
The synthesis of the 1,3,2-dithiazolyl radical (<b>1</b>) derived from 3,4-dihydro-2H-1,5-benzodioxepine is described. Crystals of <b>1</b> were grown by vacuum sublimation and adopt the orthorhombic space group <i>Pbca</i>. DC SQUID magnetometry reveals Curie-Weiss behavior for <i>T</i> > 20 K (<i>C</i> = 0.376 emu K mol<sup>-1</sup> and θ = +5.7 K) consistent with local ferromagnetic interactions. The presence of weaker antiferromagnetic interactions led to magnetic ordering as a canted antiferromagnet (T<sub>N</sub> = 3.8 K) with a small spontaneous moment (2.5 × 10<sup>-4</sup> Nβ) and a small coercivity (<i>ca</i>. 8 Oe) at 2 K. Magnetic ordering was reflected in a field dependence of the magnetic susceptibility below 3.8 K and a peak in the low temperature heat capacity data. A canting angle of 0.08° was estimated from <i>M</i> vs <i>H</i> data.
Authors
- Dominique Leckie (ORCID: https://orcid.org/0000-0002-5348-6046)
- Justin D. Wrixon
- Jeremy M. Rawson (ORCID: https://orcid.org/0000-0003-0480-5386)
- Maher Harb (ORCID: https://orcid.org/0000-0002-6853-9454)
- Javier Campo (ORCID: https://orcid.org/0000-0002-3600-1721)
- Melanie Pilkington
- Hamed Bakhshi (ORCID: https://orcid.org/0000-0002-4072-8931)
- Ana Arauzo
- N.M. Mroz
Institutions
- Brock University (CA)
- Universidad de Zaragoza (ES)
- Instituto de Nanociencia y Materiales de Aragón (ES)
- University of Windsor (CA)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2024-11-07
- DOI
- https://doi.org/10.1021/jacs.4c09796
- Citations
- 3
- Primary Topic
- Magnetism in coordination complexes
- Type
- article
- Field-Weighted Citation Impact
- 0.35
Funders
- Canada Research Chairs
- Natural Sciences and Engineering Research Council of Canada
- Agencia Estatal de Investigación