Iron Polyoxometalate Single-Molecule Magnets

Iron sandwich on a tungstate bun: Two new polyoxotungstates with paramagnetic iron(III) heteroatoms (see structure, W blue, Fe yellow, O red) possess S=15/2 and S=5 ground states. Both compounds are single-molecule magnets, and the hexairon species shows large hysteresis (see picture) and quantum tu...

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Bibliographic Details
Published in:Angewandte Chemie (International ed.) 2009-01, Vol.48 (17), p.3077-3081
Main Authors: Compain, Jean-Daniel, Mialane, Pierre, Dolbecq, Anne, Mbomekallé, Israël Martyr, Marrot, Jérôme, Sécheresse, Francis, Rivière, Eric, Rogez, Guillaume, Wernsdorfer, Wolfgang
Format: Article
Language:English
Subjects:
electrochemistry
iron
Physics
polyoxometalates
single‐molecule magnets
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Summary:Iron sandwich on a tungstate bun: Two new polyoxotungstates with paramagnetic iron(III) heteroatoms (see structure, W blue, Fe yellow, O red) possess S=15/2 and S=5 ground states. Both compounds are single-molecule magnets, and the hexairon species shows large hysteresis (see picture) and quantum tunneling effects at low temperature. Electrochemical studies indicate that these species are stable in solution for a wide range of pH values.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200900117