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New oxamate-based architectures and their properties

Abstract : The family of N-substituted aromatic oxamate ligands is considered as ideal for obtaining structures of predictable dimensionality and magnetic properties. During this PhD, we have introduced additional coordinating groups (hydroxyl and carboxylic acid) on the phenyloxamate ligand, in order to obtain novel magnetic coordination polymers with original architectures. Reactivity studies for these heterotopic ligands have been performed in both bench and solvothermal conditions, towards different metal ions (CuII, CoII, NiII, MnII). On the bench, various architectures have been isolated, including Cu-based metalloligands, a mix-valence Co-based complex, and a 1D Cu-based helix. Bi- and tri-metallic chains, a 2D heterometallic compound and three 3D coordination polymers have been obtained solvothermally, a technique seldom used in oxamate chemistry. Thermal and magnetic properties were studied, temperature dependent SC to SC transition, single-ion magnet behavior or magnetic ordering were observed, supporting the potential of our approach.
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Submitted on : Sunday, November 29, 2020 - 7:26:44 PM
Last modification on : Tuesday, December 8, 2020 - 3:43:56 AM


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  • HAL Id : tel-03030124, version 1


Ang Li. New oxamate-based architectures and their properties. Inorganic chemistry. Sorbonne Université, 2019. English. ⟨NNT : 2019SORUS205⟩. ⟨tel-03030124⟩



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