Iron Polyoxometalate Single-Molecule Magnets

被引:192
作者
Compain, Jean-Daniel [1 ]
Mialane, Pierre [1 ]
Dolbecq, Anne [1 ]
Mbomekalle, Israel Martyr [1 ]
Marrot, Jerome [1 ]
Secheresse, Francis [1 ]
Riviere, Eric [2 ]
Rogez, Guillaume [3 ]
Wernsdorfer, Wolfgang [4 ,5 ]
机构
[1] Univ Versailles St Quentin, Inst Lavoisier Versailles, UMR 8180, F-78035 Versailles, France
[2] Univ Paris 11, Equipe Chim Inorgan, Inst Chim Mol & Met Orsay, UMR 8182, F-91405 Orsay, France
[3] Univ Strasbourg, CNRS, IPCMS, UMR 7504, F-67070 Strasbourg, France
[4] Univ Grenoble 1, Grenoble 9, France
[5] CNRS, Inst Neel, Grenoble 9, France
关键词
electrochemistry; iron; polyoxometalates; single-molecule magnets; FE-III; COBALT(II) CLUSTER; CU-II; MAGNETIZATION; TUNGSTOPHOSPHATE; CHEMISTRY; COMPLEX; SALTS;
D O I
10.1002/anie.200900117
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:3077 / 3081
页数:5
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