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A Three-Dimensional Ferrimagnet Composed of Mixed-Valence Mn4 Clusters Linked by an {Mn[N(CN)2]6}4− Unit

Authors

  • Hitoshi Miyasaka Dr.,

    1. Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan, and “Structural Ordering and Physical Properties”, PRESTO, Japanese science and technology agency 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, Fax: (+81) 426-77-2525
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  • Kazuya Nakata,

    1. Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan, and “Structural Ordering and Physical Properties”, PRESTO, Japanese science and technology agency 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, Fax: (+81) 426-77-2525
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  • Ken-ichi Sugiura Prof.,

    1. Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan, and “Structural Ordering and Physical Properties”, PRESTO, Japanese science and technology agency 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, Fax: (+81) 426-77-2525
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  • Masahiro Yamashita Prof.,

    1. Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan, and “Structural Ordering and Physical Properties”, PRESTO, Japanese science and technology agency 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan, Fax: (+81) 426-77-2525
    2. CREST, Japanese science and technology agency 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
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  • Rodolphe Clérac Dr.

    1. Centre de Recherche Paul Pascal, CNRS UPR 8641, 115 avenue du Dr. A. Schweitzer, 33600 Pessac, France, Fax: (+33) 5-56-84-56-00
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  • This work was supported by PRESTO (H.M.) and CREST (M.Y.), Japanese science and technology agencies. R.C. would like to thank the CNRS, the Université de Bordeaux I and the Conseil Regional d'Aquitaine for financial support. We thank Prof. Claude Coulon for fruitful discussions.

Abstract

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Ein Ferromagnet mit einer 3D-Netzstruktur (siehe Bild) wurde synthetisiert und charakterisiert. Die Verbindung besteht aus gemischtvalenten Mn4-Clustereinheiten mit Einzelmolekülmagnet-Eigenschaften sowie aus paramagnetischen MnII-Einheiten. Beide Bausteine sind über Dicyanamid-Brückenliganden miteinander verbunden. Die Verbindungen werden bei 4.1 K ferromagnetisch, was für ein Spin-Flip-Phänomen unter dem Einfluss eines Magnetfeldes spricht.

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