Issue 5, 2007
From the journal:

Dalton Transactions

Self-assembly of the unique heterotrimetallic Cu/Co/M complexes possessing triangular antiferromagnetic {Cu2CoPb}2 and linear ferromagnetic {Cu2CoCd2} cores†

Dmytro S. Nesterov,a   Volodymyr N. Kokozay,*a   Brian W. Skelton,b   Julia Jezierskac  and  Andrew Ozarowskid  

* Corresponding authors

a Department of Inorganic Chemistry, National Taras Shevchenko Univ., Volodymyrska str. 64, Kyiv, Ukraine
E-mail: kokozay@univ.kiev.ua
Fax: +38044 2862467

b School of Biomedical, Biomolecular and Chemical Sciences, University of Western Australia, Crawley, Australia

c Faculty of Chemistry, University of Wroclaw, 14 Joliot-Curie Str., Wroclaw, Poland

d National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Drive, Tallahassee, Florida, USA

Abstract

Two novel heterotrimetallic octa-[Cu2CoPbCl4(L)4]2 (1) and pentanuclear [Cu2CoCd2Cl6(L)4(HOMe)2] (2) complexes have been prepared in one-pot reactions of zerovalent copper with metal chlorides in a methanol (for 1) or acetonitrile (for 2) solution of 2-(dimethylamino)ethanol (HL) in open air. The crystal structures of both compounds consist of discrete centrosymmetric heterotrimetallic molecules revealing triangular (1) and unique consecutive (2) arrangements of magnetic CuII2CoII cores. The complex 1 can be viewed as a dimer made up of tetranuclear Cu2CoPbCl4(L)4 units linked through the two µ2-Cl atoms. The molecular structure of 2 is a pentanuclear assembly containing the previously unknown Cu(µ-O)2Co(µ-O)2Cu core. The magnetic studies of 1 revealed an antiferromagnetic coupling (JCoCu = 37 cm−1 and JCuCu = 87 cm−1) while 2 exhibits a weak ferromagnetic behavior (JCoCu = −3.2 cm−1 and JCuCu = −14.2 cm−1). The correlations between magnetic behaviour and structures as well as synthetic features are also discussed.

Graphical abstract: Self-assembly of the unique heterotrimetallic Cu/Co/M complexes possessing triangular antiferromagnetic {Cu2CoPb}2 and linear ferromagnetic {Cu2CoCd2} cores

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Article information

DOI
https://doi.org/10.1039/B612788F
Article type
Paper
Submitted
05 Sep 2006
Accepted
23 Nov 2006
First published
13 Dec 2006

Dalton Trans., 2007, 558-564

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Self-assembly of the unique heterotrimetallic Cu/Co/M complexes possessing triangular antiferromagnetic {Cu2CoPb}2 and linear ferromagnetic {Cu2CoCd2} cores

D. S. Nesterov, V. N. Kokozay, B. W. Skelton, J. Jezierska and A. Ozarowski, Dalton Trans., 2007, 558 DOI: 10.1039/B612788F

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