Incorporation of a tripodal ligand with a (N,O,O)-donor set into a new family of nickel and cobalt spin clusters

被引：23

作者：

Alley, Kerwyn G.

Bircher, Roland

Guedel, Hans U.

Moubaraki, Boujemaa

Murray, Keith S.

Abrahams, Brendan F.

Boskovic, Colette ^{[1
]}

机构：

[1] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia

[2] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland

[3] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

来源：

POLYHEDRON | 2007年 / 26卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

spin clusters; polynuclear complexes; nickel; cobalt; tripodal ligands; magnetochemistry;

D O I：

10.1016/j.poly.2006.06.028

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of Ni(OAc)(2), NiX2 (X = Cl, Br) or CoCl2 with the proligand 2-amino-2-methyl-1,3-propanediol (ampdH(2),) affords a new family of tetranuclear complexes. The syntheses of [Ni-4(OAC)4(ampdH)(4)] (1) and [M4X4(ampdH)(4)] (M = Ni, X = Cl, 2; M = Ni, X = Br, 3; M = Co, X = Cl, 4) are reported, together with the single crystal X-ray structures of 1, 2 and 4 and the magnetochemical characterization of 1, 3 and 4. Each member of this family of complexes displays a low symmetry structure that incorporates a {M4O4} core unit based on a distorted cubane. Magnetic measurements reveal ferromagnetic exchange interactions for 1, 3 and 4. These give rise to S = 4 ground state spins for the tetranuclear Ni complexes and an anisotropic effective S' = 2 ground state for the Co complex. Crown Copyright (c) 2006 Published by Elsevier Ltd. All rights reserved.

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页码：369 / 377

页数：9

相关论文

共 41 条

[1]

ALLEY KG, UNPUB

[2] Magnetic excitations in polyoxometalate clusters observed by inelastic neutron scattering:: evidence for anisotropic ferromagnetic exchange interactions in the tetrameric cobalt(II) cluster [Co4(H2O)2(PW9O34)2]10-.: Comparison with the magnetic and specific heat properties [J].

Andres, H ;

Clemente-Juan, JM ;

Aebersold, M ;

Güdel, HU ;

Coronado, E ;

Büttner, H ;

Kearly, G ;

Melero, J ;

Burriel, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (43) :10028-10034

[3] Magnetic polyoxometalates:: Anisotropic antiferro- and ferromagnetic exchange interactions in the pentameric cobalt(II) cluster [Co3W(D2O)2(CoW9O34)2]12-.: A magnetic and inelastic neutron scattering study [J].

Andres, H ;

Clemente-Juan, JM ;

Basler, R ;

Aebersold, M ;

Güdel, HU ;

Borrás-Almenar, JJ ;

Gaita, A ;

Coronado, E ;

Büttner, H ;

Janssen, S .

INORGANIC CHEMISTRY, 2001, 40 (08) :1943-1950

[4] Distorted MnIVMn3III cubane complexes as single-molecule magnets [J].

Aubin, SMJ ;

Wemple, MW ;

Adams, DM ;

Tsai, HL ;

Christou, G ;

Hendrickson, DN .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (33) :7746-7754

[5] 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

[6] Modeling spin interactions in a cyclic trimer and a cuboidal Co4O4 core with Co(II) in tetrahedral and octahedral environments [J].

Berry, JF ;

Cotton, FA ;

Liu, CY ;

Lu, TB ;

Murillo, CA ;

Tsukerblat, BS ;

Villagran, D ;

Wang, XP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (13) :4895-4902

[7] High-nuclearity mixed-chelate ferric complexes from a new family of polynuclear precursors [J].

Boskovic, C ;

Güdel, HU ;

Labat, G ;

Neels, A ;

Wernsdorfer, W ;

Moubaraki, B ;

Murray, KS .

INORGANIC CHEMISTRY, 2005, 44 (09) :3181-3189

[8] Synthesis and characterization of a new family of bi-, tri-, tetra-, and pentanuclear ferric complexes [J].

Boskovic, C ;

Sieber, A ;

Chaboussant, G ;

Gudel, HU ;

Ensling, J ;

Wernsdorfer, W ;

Neels, A ;

Labat, G ;

Stoeckli-Evans, H ;

Janssen, S .

INORGANIC CHEMISTRY, 2004, 43 (16) :5053-5068

[9] Ferromagnetic and antiferromagnetic intermolecular interactions in a new family of Mn4 complexes with an energy barrier to magnetization reversal [J].

Boskovic, C ;

Bircher, R ;

Tregenna-Piggott, PLW ;

Güdel, HU ;

Paulsen, C ;

Wernsdorfer, W ;

Barra, AL ;

Khatsko, E ;

Neels, A ;

Stoeckli-Evans, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (46) :14046-14058

[10] SPIN SPIN INTERACTIONS IN POLYNUCLEAR NICKEL(II) COMPLEXES - A LOW-TEMPERATURE SUSCEPTIBILITY AND MAGNETIZATION STUDY OF THE CUBANE TETRANUCLEAR COMPLEX NI4(II)(CYCLOHEXANE-R-1,C-3,C-5-TRIAMINE)4(MU-OH)4(NO3)4.7H2O [J].

BOYD, PDW ;

MARTIN, RL ;

SCHWARZENBACH, G .

AUSTRALIAN JOURNAL OF CHEMISTRY, 1988, 41 (09) :1449-1456

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