Reversible Switching of a Cobalt Complex by Thermal, Pressure, and Electrochemical Stimuli: Abrupt, Complete, Hysteretic Spin Crossover

被引：157

作者：

Cowan, Matthew G. ^{[1
,2
]}

Olguin, Juan ^{[1
,2
]}

Narayanaswamy, Suresh ^{[3
,4
]}

Tallon, Jeffery L. ^{[3
,4
]}

Brooker, Sally ^{[1
,2
]}

机构：

[1] Univ Otago, Dept Chem, Dunedin 9054, New Zealand

[2] Univ Otago, MacDiarmid Inst Adv Mat & Nanotechnol, Dunedin 9054, New Zealand

[3] MacDiarmid Inst Adv Mat & Nanotechnol, Lower Hutt, New Zealand

[4] Ind Res Ltd, Lower Hutt, New Zealand

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 06期

关键词：

ELECTRONIC-PROPERTIES; MAGNETIC-PROPERTIES; TRANSITION; STATE; IRON(II); TEMPERATURE; 5-COORDINATE; LIGANDS;

D O I：

10.1021/ja208429u

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Triply switchable [Co-II(dpzca)(2)] shows an abrupt, reversible, and hysteretic spin crossover (T-1/2 down arrow = 168 K, T-1/2 up arrow = 179 K, and Delta T-1/2 = 11 K) between the high-spin (HS) and low-spin (LS) states of cobalt(II), both of which have been structurally characterized. The spin transition is also reversibly triggered by pressure changes. Moreover, in a third reversible switching mechanism for this complex, the magnetic properties can be switched between HS cobalt(II) and LS cobalt(III) by redox.

引用

页码：2892 / 2894

页数：3

共 36 条

[1] Polymorphism and "reverse'' spin transition in the spin crossover system [Co(4-terpyridone)2](CF3SO3)2•1H2O [J].

Agusti, Gloria ;

Bartual, Carlos ;

Martinez, Victor ;

Munoz-Lara, Francisco J. ;

Gaspar, Ana B. ;

Carmen Munoz, M. ;

Real, Jose A. .

NEW JOURNAL OF CHEMISTRY, 2009, 33 (06) :1262-1267

[2] Guidelines to design new spin crossover materials [J].

Atmani, Chahlae ;

El Hajj, Fatima ;

Benmansour, Samia ;

Marchivie, Mathieu ;

Triki, Smail ;

Conan, Francoise ;

Patinec, Veronique ;

Handel, Henri ;

Dupouy, Gaelle ;

Gomez-Garcia, Carlos J. .

COORDINATION CHEMISTRY REVIEWS, 2010, 254 (13-14) :1559-1569

[3] Cobalt(II) complexes of pyridazine or triazole containing ligands: spin-state control [J].

Beckmann, U ;

Brooker, S .

COORDINATION CHEMISTRY REVIEWS, 2003, 245 (1-2) :17-29

[4]

Brooker S, 1999, ANGEW CHEM INT EDIT, V38, P408, DOI 10.1002/(SICI)1521-3773(19990201)38:3<408::AID-ANIE408>3.0.CO

[5]

2-P

[6] Nano-magnetic materials: spin crossover compounds vs. single molecule magnets vs. single chain magnets [J].

Brooker, Sally ;

Kitchen, Jonathan A. .

DALTON TRANSACTIONS, 2009, (36) :7331-7340

[7]

Carbonera C, 2006, DALTON T, P3058, DOI 10.1039/b601366j

[8]

Carlin R. L., 1986, MAGNETOCHEMISTRY

[9] Nine non-symmetric pyrazine-pyridine imide-based complexes: reversible redox and isolation of [MII/III(pypzca)2]0/+ when M = Co, Fe [J].

Cowan, Matthew G. ;

Brooker, Sally .

DALTON TRANSACTIONS, 2012, 41 (05) :1465-1474

[10] BIS(DIMETHYLVIOLURATO)(PHENANTHROLINE)COBALT(II), A LOW-SPIN OCTAHEDRAL COBALT(II) COMPLEX - CRYSTAL-STRUCTURE OF [CO(DMVI)2PHEN].2CHCL3 [J].

FAUS, J ;

JULVE, M ;

LLORET, F ;

MUNOZ, MC .

INORGANIC CHEMISTRY, 1993, 32 (10) :2013-2017

← 1 2 3 4 →