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Updated: Jun 25, 2026
Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Magnetic properties and magnetic structure of Cu(II)3Mo(VI)2O9
Serge Vilminot1, Gilles André, Mohamedally Kurmoo
1Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 (CNRS-UDS), 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France. vilminot@ipcms.u-strasbg.fr
Abstract:
The magnetic properties and the low-temperature nuclear and magnetic structures of Cu(3)Mo(2)O(9) are reported. It consists of magnetic chains of oxygen-bridged vertex-shared Cu(4) tetrahedra connected into a 3D network by bridging MoO(4). Each chain is a segment of the pyrochlore structure. The magnetic properties are dominated by antiferromagnetic coupling and show a low-dimensional behavior with a broad maximum at 20 K. At 9.5 K, long-range antiferromagnetic ordering with a small canting is observed. The magnetic structure determination from neutron diffraction resolves only the orientations and magnitude (1.0(1) micro(B) per Cu) of the moments of two of the three crystallographically independent atoms. The third appears not to contribute to the long-range ordering. Geometric frustration may be responsible for the randomness. It is a unique antiferromagnet with eight sublattices (two sets of four) in the ac plane, leaving the canting to be only possible along the b axis.
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