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Issue 2, 2008
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A single molecule magnet (SMM) with a helicate structure

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The X-ray structure determination of [L2Cu2Gd2(NO3)6(H2O)2](0.5H2O) (L = bis-[(2-hydroxy-3-ethoxyphenyl)methylene]-4,4′-methylenedianiline) confirms the existence of a tetranuclear double-stranded homotopic and unsaturated helicate. In each Cu–Gd pair, the reduced Cu⋯Gd distance allows ferromagnetic Cu–Gd superexchange interactions through two phenoxo oxygen atoms. Replacement of gadolinium ions by terbium ions yields the first example of a helicate behaving as a single molecule magnet (SMM).

Graphical abstract: A single molecule magnet (SMM) with a helicate structure

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The article was received on 23 Oct 2007, accepted on 27 Nov 2007 and first published on 05 Dec 2007

Article type: Letter
DOI: 10.1039/B716283A
Citation: New J. Chem., 2008,32, 197-200

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    A single molecule magnet (SMM) with a helicate structure

    G. Novitchi, J. Costes, J. Tuchagues, L. Vendier and W. Wernsdorfer, New J. Chem., 2008, 32, 197
    DOI: 10.1039/B716283A

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