Synthesis and characterisation of Fe6 and Fe12 clusters using bicine

被引：17

作者：

Graham, Kristoffer ^{[1
]}

Darwish, Amiera ^{[1
]}

Ferguson, Alan ^{[1
]}

Parsons, Simon ^{[2
]}

Murrie, Mark ^{[1
]}

机构：

[1] Univ Glasgow, Dept Chem, WestCHEM, Glasgow G12 8QQ, Lanark, Scotland

[2] Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland

来源：

POLYHEDRON | 2009年 / 28卷 / 9-10期

基金：

英国工程与自然科学研究理事会;

关键词：

Iron(III); Bicine; Polynuclear; Molecular magnetism; SINGLE-MOLECULE MAGNETS; COMPLEXES; IRON(III); IRON; CRYSTAL; N; N-BIS(2-HYDROXYETHYL)GLYCINE; CORE;

D O I：

10.1016/j.poly.2009.01.018

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of bicine {BicH(3), N,N-bis(2-hydroxyethyl)glycine} with an Fe(III) oxo-centered pivalate triangle in MeCN in the presence of Et2NH yields [Et2NH2](2)[Fe6O2(OH)(2)(Bic)(2)(O2CCMe3)(8)], which possesses an S = 5 ground state. Changing the base to NaOMe produces [Fe12O4(Bic)(4)(HBic)(4)(O2CCMe3)(8)], which contains two Fe-6 units bridged by the carboxylate arms from the bicine ligands. The complex displays strong antiferromagnetic coupling leading to an S = 0 ground state. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1830 / 1833

页数：4

共 24 条

[1] Odd-numbered FeIII complexes:: Synthesis, molecular structure, reactivity, and magnetic properties [J].

Ako, Ayuk M. ;

Waldmann, Oliver ;

Mereacre, Valeriu ;

Kloewer, Frederik ;

Hewitt, Ian J. ;

Anson, Christopher E. ;

Guedel, Hans U. ;

Powell, Annie K. .

INORGANIC CHEMISTRY, 2007, 46 (03) :756-766

[2]

Ammala P, 2000, ANGEW CHEM INT EDIT, V39, P1688, DOI 10.1002/(SICI)1521-3773(20000502)39:9<1688::AID-ANIE1688>3.0.CO

[3]

2-8

[4] Will spin-relaxation times in molecular magnets permit quantum information processing? [J].

Ardavan, Arzhang ;

Rival, Olivier ;

Morton, John J. L. ;

Blundell, Stephen J. ;

Tyryshkin, Alexei M. ;

Timco, Grigore A. ;

Winpenny, Richard E. P. .

PHYSICAL REVIEW LETTERS, 2007, 98 (05)

[5] Synthesis of 3d metallic single-molecule magnets [J].

Aromi, Guillem ;

Brechin, Euan K. .

SINGLE-MOLECULE MAGNETS AND RELATED PHENOMENA, 2006, 122 :1-67

[6] Unusual structural types in polynuclear iron chemistry from the use of N,N,N′,N′-tetrakis(2-hydroxyethyl)ethylenediamine (edteH4):: Fe5, Fe6, and Fe12 clusters [J].

Bagai, Rashmi ;

Daniels, Matthew R. ;

Abboud, Khalil A. ;

Christou, George .

INORGANIC CHEMISTRY, 2008, 47 (08) :3318-3327

[7]

BATSANOV AS, 1988, KOORDINATS KHIM+, V14, P266

[8] Molecular spintronics using single-molecule magnets [J].

Bogani, Lapo ;

Wernsdorfer, Wolfgang .

NATURE MATERIALS, 2008, 7 (03) :179-186

[9] The utility of the single-molecule magnet Fe8 as a magnetic resonance imaging contrast agent over a broad range of concentration [J].

Cage, Brant ;

Russek, Stephen E. ;

Shoemaker, Richard ;

Barker, Alex J. ;

Stoldt, Conrad ;

Ramachandaran, Vasanth ;

Dalal, Naresh S. .

POLYHEDRON, 2007, 26 (12) :2413-2419

[10] Linking iron(iii) carboxylates into high-nuclearity complexes by using Bis-tris [J].

WestCHEM, Department of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom .

Dalton Trans., 2008, 6 (731-733)

← 1 2 3 →