Issue 6, 2008
From the journal:

Dalton Transactions

One-dimensional coordination polymers of antiferromagnetically-coupled [Mn4] single-molecule magnets†‡

Lollita Lecren,a   Olivier Roubeau,*a   Yang-Guang Li,a   Xavier F. Le Goff,a   Hitoshi Miyasaka,b   Florent Richard,c   Wolfgang Wernsdorfer,d   Claude Coulona  and  Rodolphe Clérac*a  

* Corresponding authors

a Université Bordeaux 1, CNRS-Centre de Recherche Paul Pascal, 115 avenue du Dr. A. Schweitzer, Pessac, France
E-mail: roubeau@crpp-bordeaux.cnrs.fr, clerac@crpp-bordeaux.cnrs.fr
Fax: +33 556 84 5600

b Department of Chemistry, Graduate School of Science Tohoku University, Aramaki-Aza-Aoba, Aoba-ku, Sendai, Japan

c IUT Bordeaux 1, 15 rue Naudet, Gradignan Cedex, France

d Institut Néel, CNRS, BP 166, 25 av. des Martyrs, Grenoble, France

Abstract

Reactions of the rhombic [MnII2MnIII2(hmp)6]4+ complex in acetonitrile with simple carboxylate ligands yield (i) three new isolated [Mn4] complexes, namely [Mn4(hmp)6(CH3COO)2(H2O)2](ClO4)2·4H2O (1), [Mn4(hmp)6(CCl3COO)2(H2O)2](ClO4)2 (2) and [Mn4(hmp)6(C6H5COO)2(H2O)2](ClO4)2·4CH3CN·2H2O (3) in the presence of either bulky carboxylate or of an excess of Mn(II) source; and (ii) two 1D arrangements of [Mn4] complexes connected through double syn–syn carboxylate bridges when using acetate and chloroacetate, namely {[Mn4(hmp)6(CH3COO)2](ClO4)2·H2O}n (4) and {[Mn4(hmp)6(ClCH2COO)2](ClO4)2·2H2O}n (5). The assembly of such building blocks can thus be controlled by an adequate choice of the bridging anion. As expected, the isolated [Mn4] complexes behave as Single-Molecule Magnets as shown by the study of their static and dynamic magnetic properties. Detailed magnetic studies both on polycrystalline samples and single crystals show that the chain compounds are isolated antiferromagnetic chains. The slow relaxation of their staggered magnetization has been studied thanks to finite-size effects induced by the intrinsic defects of the material.

Graphical abstract: One-dimensional coordination polymers of antiferromagnetically-coupled [Mn4] single-molecule magnets

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/B715528J
Article type
Paper
Submitted
09 Oct 2007
Accepted
15 Nov 2007
First published
13 Dec 2007

Dalton Trans., 2008, 755-766

Permissions

Request permissions

One-dimensional coordination polymers of antiferromagnetically-coupled [Mn4] single-molecule magnets

L. Lecren, O. Roubeau, Y. Li, X. F. Le Goff, H. Miyasaka, F. Richard, W. Wernsdorfer, C. Coulon and R. Clérac, Dalton Trans., 2008, 755 DOI: 10.1039/B715528J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements