Issue 6, 2011
From the journal:

New Journal of Chemistry

Binuclear heterometallic M(iii)–Mn(ii) (M = Fe, Cr) oxalate-bridged complexes associated with a bisamidinium dication: a structural and magnetic study†‡

Catalin Maxim,ab   Sylvie Ferlay*ac  and  Cyrille Train*de  

* Corresponding authors

a Laboratoire de Chimie de Coordination Organique, UMR CNRS-UdS 7140, Université de Strasbourg, Institut Le Bel, 4, rue Blaise Pascal, F-67000 Strasbourg, France
E-mail: ferlay@unistra.fr

b University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, Str. Dumbrava Rosie nr. 23, 020464-Bucharest, Romania

c Institut Universitaire de France (IUF), France

d Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
E-mail: cyrille.train@grenoble.cnrs.fr

e Université Joseph Fourier, BP 53, F-38041 Grenoble Cedex 9, France

Abstract

Two heterometallic oxalate-bridged dinuclear anions associated with a non-H-bond donor bisamidinium cation (Cat2+), leading to compounds of formula Cat[MnII(H2O)4MIII(ox)3]2·6H2O (M = Fe (1) and Cr (2)), are presented. Their structural analysis reveals that the anion is the combination of a tris(oxalato)metallate(III) moiety with a tetra(aqua)manganese(II) entity. A 3D H-bonded network is formed between the crystallisation and coordination water molecules and the terminal and bridging oxalate ligands. The exchange interaction between both metal ions mediated by the oxalate bridge is −4.9 cm−1 for 1 and +1.6 cm−1 for 2 (H = −JS1S2).

Graphical abstract: Binuclear heterometallic M(iii)–Mn(ii) (M = Fe, Cr) oxalate-bridged complexes associated with a bisamidinium dication: a structural and magnetic study

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Article information

DOI
https://doi.org/10.1039/C0NJ00976H
Article type
Paper
Submitted
11 Dec 2010
Accepted
07 Feb 2011
First published
28 Feb 2011

New J. Chem., 2011,35, 1254-1259

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Binuclear heterometallic M(III)–Mn(II) (M = Fe, Cr) oxalate-bridged complexes associated with a bisamidinium dication: a structural and magnetic study

C. Maxim, S. Ferlay and C. Train, New J. Chem., 2011, 35, 1254 DOI: 10.1039/C0NJ00976H

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