A1 Journal article (refereed)
Room-Temperature Magnetic Bistability in a Salt of Organic Radical Ions (2021)


Taponen, A. I., Ayadi, A., Lahtinen, M. K., Oyarzabal, I., Bonhommeau, S., Rouzières, M., Mathonière, C., Tuononen, H. M., Clérac, R., & Mailman, A. (2021). Room-Temperature Magnetic Bistability in a Salt of Organic Radical Ions. Journal of the American Chemical Society, 143(39), 15912-15917. https://doi.org/10.1021/jacs.1c07468


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Publication details

All authors or editorsTaponen, Anni I.; Ayadi, Awatef; Lahtinen, Manu K.; Oyarzabal, Itziar; Bonhommeau, Sébastien; Rouzières, Mathieu; Mathonière, Corine; Tuononen, Heikki M.; Clérac, Rodolphe; Mailman, Aaron

Journal or seriesJournal of the American Chemical Society

ISSN0002-7863

eISSN1520-5126

Publication year2021

Publication date21/09/2021

Volume143

Issue number39

Pages range15912-15917

PublisherAmerican Chemical Society (ACS)

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1021/jacs.1c07468

Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/85074


Abstract

Cocrystallization of 7,7′,8,8′-tetracyanoquinodimethane radical anion (TCNQ–•) and 3-methylpyridinium-1,2,3,5-dithiadiazolyl radical cation (3-MepyDTDA+•) afforded isostructural acetonitrile (MeCN) or propionitrile (EtCN) solvates containing cofacial π dimers of homologous components. Loss of lattice solvent from the diamagnetic solvates above 366 K affords a high-temperature paramagnetic phase containing discrete TCNQ–• and weakly bound π dimers of 3-MepyDTDA+•, as evidenced by X-ray diffraction methods and magnetic susceptibility measurements. Below 268 K, a first-order phase transition occurs, leading to a low-temperature diamagnetic phase with TCNQ–• σ dimer and π dimers of 3-MepyDTDA+•. This study reveals the first example of cooperative interactions between two different organic radical ions leading to magnetic bistability, and these results are central to the future design of multicomponent functional molecular materials.


Keywordsorganic compoundsfree radicalsmagnetic properties


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Ministry reportingYes

Reporting Year2021

JUFO rating3


Last updated on 2024-26-03 at 09:20