Issue 22, 2011

A mixed valence manganese triangle in a trigonal lattice: structure and magnetism

Abstract

The synthesis, structural and magnetic characterisation of trinuclear manganese cluster, [Mn3O(O2C-anth)6(HOCH3)3] 1 (where O2C-anth = 9-anthracenecarboxylate), with crystallographic three-fold (C3) symmetry, are described. The cluster was prepared by a carboxylate exchange reaction between HO2C-anth and [Mn12O12(O2CMe)16(H2O)4] with concomitant fragmentation of the dodecanuclear Mn core of the starting material to form a trinuclear Mn33-O) cluster capped by six carboxylate ligands. Bond valence sum calculations and SQUID magnetometric measurements establish the oxidation states of the metal ions as MnII·2 MnIII which are antiferromagnetically coupled.

Graphical abstract: A mixed valence manganese triangle in a trigonal lattice: structure and magnetism

Supplementary files

Article information

Article type
Paper
Submitted
12 Jan 2011
Accepted
04 Apr 2011
First published
04 May 2011

Dalton Trans., 2011,40, 5891-5894

A mixed valence manganese triangle in a trigonal lattice: structure and magnetism

N. Taleb, V. J. Richards, S. P. Argent, J. van Slageren, W. Lewis, A. J. Blake and N. R. Champness, Dalton Trans., 2011, 40, 5891 DOI: 10.1039/C1DT10057B

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