Issue 36, 2016

Oxalate-mediated long-range antiferromagnetism order in Fe2(C2O4)3·4H2O

Abstract

In this paper we reveal for the first time the magnetic properties of iron oxalate tetrahydrate, a compound commercialized for decades but whose structure was solved only recently. Susceptibility measurements and neutron powder diffraction experiments reveal the establishment of a long-range magnetic order below 25 K. The magnetic structure can be described with a propagation vector k = (½, ½, 0). The magnetic ordered phase is characterized by collinear antiferromagnetic couplings between adjacent Fe3+ atoms, whatever the chelating mode of the oxalate ligand. Moreover, an analysis of the topology reveals that a fourth Fe–Fe magnetic coupling has to be taken into account to generate 3D long range order.

Graphical abstract: Oxalate-mediated long-range antiferromagnetism order in Fe2(C2O4)3·4H2O

Supplementary files

Article information

Article type
Paper
Submitted
11 Jul 2016
Accepted
09 Aug 2016
First published
09 Aug 2016

Dalton Trans., 2016,45, 14311-14319

Oxalate-mediated long-range antiferromagnetism order in Fe2(C2O4)3·4H2O

G. Rousse and J. Rodríguez-Carvajal, Dalton Trans., 2016, 45, 14311 DOI: 10.1039/C6DT02740G

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