Advanced Materials

Ferromagnetic order in a novel imino nitroxide (IT)Py(C [TRIPLE BOND] CH) radical derived from 2-ethynyl-pyridine

Authors

  • Francisco M. Romero,

    1. Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires Ecole Chimie, Polymères, Matériaux, UMR 46 au CNRS 1, rue Blaise Pascal, F-67008 Strasbourg (France)
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  • Dr. Raymond Ziessel,

    Corresponding author
    1. Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires Ecole Chimie, Polymères, Matériaux, UMR 46 au CNRS 1, rue Blaise Pascal, F-67008 Strasbourg (France)
    • Laboratoire de Chimie, d'Electronique et de Photonique Moleculaires Ecole Chimie, Polymères, Matériaux, UMR 46 au CNRS 1, rue Blaise Pascal, F-67008 Strasbourg (France)
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  • Dr. Marc Drillon,

    1. Groupe des Matériaux Inorganiques, IPCMS, UMR 46 au CNRS 23, rue du Loess, F-67037 Strasbourg (France)
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  • Dr. Jean-Louis Tholence,

    1. Centre de Recherche sur les très basses températures UPR 5001 au CNRS, F-38042 Grenoble (France)
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  • Dr. Carley Paulsen,

    1. Centre de Recherche sur les très basses températures UPR 5001 au CNRS, F-38042 Grenoble (France)
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  • Dr. Nathalie Kyritsakas,

    1. Laboratoire de Cristallochimie et de Chimie Structurale Faculté de Chimie, Université Louis Pasteur 4, rue Blaise Pascal, F-67008 Strasbourg (France)
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  • Prof. Jean Fisher

    1. Laboratoire de Cristallochimie et de Chimie Structurale Faculté de Chimie, Université Louis Pasteur 4, rue Blaise Pascal, F-67008 Strasbourg (France)
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  • The authors are pleased to acknowledge continued technical assistance from Richard Poinsot and Prof. Antoine Herr and helpful discussion with Dr. Mohamed Kurmoo. This work was partially supported by the CNRS and by the Human Capital and Mobility Program of E.U. (Network: “Magnetic Molecular Materials”, No. ERBCHRXCT 920080).

Abstract

Purely organic ferromagnets are rare, the main problem being the relative orientation of the spins in a three-dimensional network. The first example of ferromagnetic ordering in an imino-nitroxide radical is reported. A detailed analysis of the structure reveals that CCH[BOND]O hydrogen bonds are responsible for both the crystal packing and the ferromagnetic spin interactions within an infinite chain of ordered molecules. This radical is unique: its structure is the first demonstration of the use of terminal acetylenes to generate supramolecular networks.

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