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Updated: Feb 22, 2026

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
Inclusion of a dithiadiazolyl radical in a seemingly non-porous solid
Varvara I Nikolayenko1, Leonard J Barbour, Ana Arauzo
1Department of Chemistry and Polymer Science, Stellenbosch University, P. Bag X1 Matieland, 7602, Stellenbosch, South Africa. dhaynes@sun.ac.za.
Abstract:
Inclusion of the dithiadiazolyl radical PhCNSSN˙ into the dynamically porous metallocycle [Cu2(L1)2Cl4], where L1 is the bidentate ligand 1,3-bis(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene, has been achieved by gas phase diffusion. Single crystal X-ray diffraction, powder X-ray diffraction, UV-visible spectroscopy, EPR and SQUID magnetometry studies confirm inclusion of the radical into this seemingly non-porous material, and illustrate the antiferromagnetic coupling between the paramagnetic host and guest species. The radical guest is readily released by heating or by the addition of solvent (CH2Cl2).
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