What makes a single molecule magnet?

被引：35

作者：

Madhu, NT

Tang, JK

Hewitt, IJ

Clérac, R

Wernsdorfer, W

van Slageren, J

Anson, CE

Powell, AK

机构：

[1] Univ Karlsruhe, Inst Anorgan Chem, D-76128 Karlsruhe, Germany

[2] CNRS, Ctr Rech Paul Pascal, F-33600 Pessac, France

[3] CNRS, Lab Louis Neel, F-38042 Grenoble, France

[4] Univ Stuttgart, Inst Phys 1, D-70550 Stuttgart, Germany

来源：

POLYHEDRON | 2005年 / 24卷 / 16-17期

关键词：

single molecule magnet; Fe(III) clusters;

D O I：

10.1016/j.poly.2005.03.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Recent work in designing and synthesising molecules displaying the phenomenon of "single molecule magnet" (SMM) behaviour has shown how a propeller motif with four paramagnetic metal centres can both stabilise non-zero ground spin states and display slow relaxation of the hysteresis: the signature of an SMM. Having thus identified the structural elements required it should be straightforward to produce new examples and learn how to enhance the SMM characteristics. Here we report on an attempt to do this with the surprising result that a molecule specifically designed to display SMM behaviour proves not to, posing the question as to why this should be. (c) 2005 Elsevier Ltd. All rights reserved.

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页码：2864 / 2869

页数：6

相关论文

共 18 条

[1] Single-molecule magnet behavior of a tetranuclear iron(III) complex. The origin of slow magnetic relaxation in iron(III) clusters [J].

Barra, AL ;

Caneschi, A ;

Cornia, A ;

de Biani, FF ;

Gatteschi, D ;

Sangregorio, C ;

Sessoli, R ;

Sorace, L .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (22) :5302-5310

[2] High-nuclearity magnetic clusters:: Generalized spin Hamiltonian and its use for the calculation of the energy levels, bulk magnetic properties, and inelastic neutron scattering spectra [J].

Borrás-Almenar, JJ ;

Clemente-Juan, JM ;

Coronado, E ;

Tsukerblat, BS .

INORGANIC CHEMISTRY, 1999, 38 (26) :6081-6088

[3] MAGPACK1 a package to calculate the energy levels, bulk magnetic properties, and inelastic neutron scattering spectra of high nuclearity spin clusters [J].

Borrás-Almenar, JJ ;

Clemente-Juan, JM ;

Coronado, E ;

Tsukerblat, BS .

JOURNAL OF COMPUTATIONAL CHEMISTRY, 2001, 22 (09) :985-991

[4]

Boudreaux E.A., 1976, Theory and Applications of Molecular Paramagnetism

[5] Energy-barrier enhancement by ligand substitution in tetrairon(III) single-molecule magnets [J].

Cornia, A ;

Fabretti, AC ;

Garrisi, P ;

Mortalò, C ;

Bonacchi, D ;

Gatteschi, D ;

Sessoli, R ;

Sorace, L ;

Wernsdorfer, W ;

Barra, AL .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (09) :1136-1139

[6] Hints for the control of magnetic anisotropy in molecular materials [J].

Gatteschi, D ;

Sorace, L .

JOURNAL OF SOLID STATE CHEMISTRY, 2001, 159 (02) :253-261

[7]

MALLAH T, COMMUNIATION

[8] Resonant quantum tunneling in a new tetranuclear iron(III)-based single-molecule magnet [J].

Moragues-Cánovas, M ;

Rivière, P ;

Ricard, L ;

Paulsen, C ;

Wernsdorfer, W ;

Rajaraman, G ;

Brechin, EK ;

Mallah, T .

ADVANCED MATERIALS, 2004, 16 (13) :1101-+

[9] IDEALIZED POLYTOPAL FORMS - DESCRIPTION OF REAL MOLECULES REFERENCED TO IDEALIZED POLYGONS OR POLYHEDRA IN GEOMETRIC REACTION PATH FORM [J].

MUETTERT.EL ;

GUGGENBE.LJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1974, 96 (06) :1748-1756

[10] LOW-TEMPERATURE MAGNETIZATION OF CU(NO3)2.2.5H2O [J].

MYERS, BE ;

BERGER, L ;

FRIEDBER.SA .

JOURNAL OF APPLIED PHYSICS, 1969, 40 (03) :1149-&