Self-Assembled Tetranuclear Square Complex of Chromium(III) Bridged by Radical Pyrazine: A Molecular Model for Metal-Organic Magnets

Dandan Lou; Nathan J Yutronkie; Itziar Oyarzabal; Long-Fei Wang; Abhijit Adak; Vincent L Nadurata; Rosa Diego; Elizaveta A Suturina; Aaron Mailman; Pierre Dechambenoit; Mathieu Rouzières; Fabrice Wilhelm; Andrei Rogalev; Sébastien Bonhommeau; Corine Mathonière; Rodolphe Clérac

doi:10.1021/jacs.4c05756

Self-Assembled Tetranuclear Square Complex of Chromium(III) Bridged by Radical Pyrazine: A Molecular Model for Metal-Organic Magnets

Dandan Lou, Nathan J Yutronkie, Itziar Oyarzabal, Long-Fei Wang, Abhijit Adak, Vincent L Nadurata, Rosa Diego, Elizaveta A Suturina, Aaron Mailman, Pierre Dechambenoit, Mathieu Rouzières, Fabrice Wilhelm, Andrei Rogalev, Sébastien Bonhommeau, Corine Mathonière, Rodolphe Clérac

Research output: Contribution to journal › Article › peer-review

Abstract

The attractive electronic properties of metal-pyrazine materials─electrical conductivity, magnetic order, and strong magnetic coupling─can be tuned in a wide range depending on the metal employed, as well as its ligand-imposed redox environment. Using solvent-directed synthesis to control the dimensionality of such systems, a discrete tetranuclear chromium(III) complex, exhibiting a rare example of bridging radical pyrazine, has been prepared from chromium(II) triflate and neutral pyrazine. The strong antiferromagnetic interaction between CrIII (S = 3/2) and radical pyrazine (S = 1/2) spins, theoretically estimated at about -932 K, leads to a thermally isolated ST = 4 ground state, which remains the only populated state observable even at room temperature.

Original language	English
Pages (from-to)	19649-19653
Number of pages	5
Journal	Journal of the American Chemical Society
Volume	146
Issue number	29
Early online date	8 Jul 2024
DOIs	https://doi.org/10.1021/jacs.4c05756
Publication status	Published - 24 Jul 2024

Funding

This work was supported by the University of Bordeaux, the Re\u0301gion Nouvelle Aquitaine, Quantum Matter Bordeaux, the ANR (HiPerMagnet project, ANR-20-CE07-0022), the Centre National de la Recherche Scientifique (CNRS), the European Synchrotron (ESRF), and the China Scholarship Council (CSC) for the Ph.D. funding of D.L. I.O. acknowledges financial support from the Department of Education of the Basque Government through the PIBA project call (PIBA_2023_1_0027). S.B. thanks the platform SIV (Spectroscopie et Imagerie Vibrationnelle) funded by the European Union (FEDER) and the Re\u0301gion Nouvelle Aquitaine. A.M. acknowledges financial support from the Academy of Finland (Project 336456).

Funders	Funder number
ANR	ANR-20-CE07-0022
Department of Education of the Basque Government	PIBA_2023_1_0027
Research Council of Finland	336456

Access to Document

10.1021/jacs.4c05756

Cite this

Lou, D., Yutronkie, N. J., Oyarzabal, I., Wang, L.-F., Adak, A., Nadurata, V. L., Diego, R., Suturina, E. A., Mailman, A., Dechambenoit, P., Rouzières, M., Wilhelm, F., Rogalev, A., Bonhommeau, S., Mathonière, C., & Clérac, R. (2024). Self-Assembled Tetranuclear Square Complex of Chromium(III) Bridged by Radical Pyrazine: A Molecular Model for Metal-Organic Magnets. Journal of the American Chemical Society, 146(29), 19649-19653. https://doi.org/10.1021/jacs.4c05756

Lou, D, Yutronkie, NJ, Oyarzabal, I, Wang, L-F, Adak, A, Nadurata, VL, Diego, R, Suturina, EA, Mailman, A, Dechambenoit, P, Rouzières, M, Wilhelm, F, Rogalev, A, Bonhommeau, S, Mathonière, C & Clérac, R 2024, 'Self-Assembled Tetranuclear Square Complex of Chromium(III) Bridged by Radical Pyrazine: A Molecular Model for Metal-Organic Magnets', Journal of the American Chemical Society, vol. 146, no. 29, pp. 19649-19653. https://doi.org/10.1021/jacs.4c05756

@article{fccccf2a379545a7a7fa9c42f020deb8,

title = "Self-Assembled Tetranuclear Square Complex of Chromium(III) Bridged by Radical Pyrazine: A Molecular Model for Metal-Organic Magnets",

abstract = "The attractive electronic properties of metal-pyrazine materials─electrical conductivity, magnetic order, and strong magnetic coupling─can be tuned in a wide range depending on the metal employed, as well as its ligand-imposed redox environment. Using solvent-directed synthesis to control the dimensionality of such systems, a discrete tetranuclear chromium(III) complex, exhibiting a rare example of bridging radical pyrazine, has been prepared from chromium(II) triflate and neutral pyrazine. The strong antiferromagnetic interaction between CrIII (S = 3/2) and radical pyrazine (S = 1/2) spins, theoretically estimated at about -932 K, leads to a thermally isolated ST = 4 ground state, which remains the only populated state observable even at room temperature.",

author = "Dandan Lou and Yutronkie, {Nathan J} and Itziar Oyarzabal and Long-Fei Wang and Abhijit Adak and Nadurata, {Vincent L} and Rosa Diego and Suturina, {Elizaveta A} and Aaron Mailman and Pierre Dechambenoit and Mathieu Rouzi{\`e}res and Fabrice Wilhelm and Andrei Rogalev and S{\'e}bastien Bonhommeau and Corine Mathoni{\`e}re and Rodolphe Cl{\'e}rac",

year = "2024",

month = jul,

day = "24",

doi = "10.1021/jacs.4c05756",

language = "English",

volume = "146",

pages = "19649--19653",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

number = "29",

}

TY - JOUR

T1 - Self-Assembled Tetranuclear Square Complex of Chromium(III) Bridged by Radical Pyrazine

T2 - A Molecular Model for Metal-Organic Magnets

AU - Lou, Dandan

AU - Yutronkie, Nathan J

AU - Oyarzabal, Itziar

AU - Wang, Long-Fei

AU - Adak, Abhijit

AU - Nadurata, Vincent L

AU - Diego, Rosa

AU - Suturina, Elizaveta A

AU - Mailman, Aaron

AU - Dechambenoit, Pierre

AU - Rouzières, Mathieu

AU - Wilhelm, Fabrice

AU - Rogalev, Andrei

AU - Bonhommeau, Sébastien

AU - Mathonière, Corine

AU - Clérac, Rodolphe

PY - 2024/7/24

Y1 - 2024/7/24

N2 - The attractive electronic properties of metal-pyrazine materials─electrical conductivity, magnetic order, and strong magnetic coupling─can be tuned in a wide range depending on the metal employed, as well as its ligand-imposed redox environment. Using solvent-directed synthesis to control the dimensionality of such systems, a discrete tetranuclear chromium(III) complex, exhibiting a rare example of bridging radical pyrazine, has been prepared from chromium(II) triflate and neutral pyrazine. The strong antiferromagnetic interaction between CrIII (S = 3/2) and radical pyrazine (S = 1/2) spins, theoretically estimated at about -932 K, leads to a thermally isolated ST = 4 ground state, which remains the only populated state observable even at room temperature.

AB - The attractive electronic properties of metal-pyrazine materials─electrical conductivity, magnetic order, and strong magnetic coupling─can be tuned in a wide range depending on the metal employed, as well as its ligand-imposed redox environment. Using solvent-directed synthesis to control the dimensionality of such systems, a discrete tetranuclear chromium(III) complex, exhibiting a rare example of bridging radical pyrazine, has been prepared from chromium(II) triflate and neutral pyrazine. The strong antiferromagnetic interaction between CrIII (S = 3/2) and radical pyrazine (S = 1/2) spins, theoretically estimated at about -932 K, leads to a thermally isolated ST = 4 ground state, which remains the only populated state observable even at room temperature.

UR - http://www.scopus.com/inward/record.url?scp=85199814785&partnerID=8YFLogxK

U2 - 10.1021/jacs.4c05756

DO - 10.1021/jacs.4c05756

M3 - Article

C2 - 38976364

SN - 0002-7863

VL - 146

SP - 19649

EP - 19653

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 29

ER -

Self-Assembled Tetranuclear Square Complex of Chromium(III) Bridged by Radical Pyrazine: A Molecular Model for Metal-Organic Magnets

Abstract

Funding

Access to Document

Other files and links

Embargoed Document

Fingerprint

Cite this