| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Maxim, Catalin
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Publications (5/5 displayed)
- 2022Antiproliferative Copper(II) Complexes Bearing Mixed Chelating Ligands: Structural Characterization, ROS Scavenging, In Silico Studies, and Anti-Melanoma Activitycitations
- 2020Copper(II) Complexes with Mixed Heterocycle Ligands as Promising Antibacterial and Antitumor Speciescitations
- 2020Magnetic Investigation of an Atypical Three-Dimensional Bimetallic Oxalate-Based Magnetcitations
- 2019Magnetic Investigation of an Atypical Three-Dimensional Bimetallic Oxalate-Based Magnetcitations
- 2012Cyanomethylene-bis(phosphonate) as ditopical ligand: stepwise formation of a 2-D heterometallic Fe(III)-Ag(I) coordination networkcitations
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article
Magnetic Investigation of an Atypical Three-Dimensional Bimetallic Oxalate-Based Magnet
Abstract
International audience ; Detailed magnetic measurements and powder neutron diffraction studies have been performed on a three-dimensional (3D) oxalate-based metal–organic framework (NH4)5[Mn2Cr3(ox)9]·10H2O (ox2– = C2O42–). The thermal variations of the magnetic susceptibilitiy measured via field-cooled and zero-field-cooled procedures are compatible with an antiferromagnetic spin organization in the presence of some single-ion anisotropy. This is supported by the metamagnetic behavior observed at 0.7 T in the magnetization curve at 2 K. Temperature-dependent neutron diffraction experiments have been performed between 2.5 and 300 K on the powdered sample. The structural part of the neutron diffraction pattern matches with the C2/c space group found by single-crystal X-ray diffraction. Below 6 K, the long-range magnetic ordering leads to the observation of a single magnetic peak at 0.386 Å–1. The refinement of the neutron diffractogram allows to propose a magnetic structure where the magnetic moments of the manganese(II) and chromium(III) ions are noncollinear with a maximum angle of almost 70°. In agreement with an orbital analysis, the coupling between these magnetic moments bridged in a bis(bidentate) oxalate ligand is mainly ferromagnetic whereas it is mainly antiferromagnetic for metal ions bridged in a monodentate-bidentate mode.