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Antiferromagnetic Ordering Based on Intermolecular London Dispersion Interactions in Amphiphilic TEMPO Ammonium Salts

Abstract

Antiferromagnetic coupling in TEMPO-based radicals can be enhanced via self-assembly through London dispersion interactions in amphiphilic solids. The synthesis, magnetic characterization, and three crystal structures of the solid radical ion salts (R-DMAT-n)X with various counterions X and alkyl chain lengths n are reported. Magnetic susceptibility and absolute EPR signal intensity measurements show singlet-triplet transitions in a number of cases, which is discussed in relation to the crystal structures. Antiferromagnetic ordering effects are sensitive to both the length of the alkyl chain and the counter anion.

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Publication details

The article was received on 15 Sep 2018, accepted on 08 Nov 2018 and first published on 09 Nov 2018


Article type: Communication
DOI: 10.1039/C8CP05837G
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
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    Antiferromagnetic Ordering Based on Intermolecular London Dispersion Interactions in Amphiphilic TEMPO Ammonium Salts

    J. Exner, S. Eusterwiemann, O. Janka, C. Doerenkamp, A. Massolle, O. Niehaus, C. G. Daniliuc, R. Pöttgen, J. Neugebauer, A. Studer and H. Eckert, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP05837G

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