From an antiferromagnetic insulator to a strongly correlated metal in square-lattice MCl2(pyrazine)2 coordination solids
PERLEPE, Panagiota
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
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Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
PERLEPE, Panagiota
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
NEATON, Jeffrey
Department of Physics [Berkeley]
Lawrence Berkeley National Laboratory [Berkeley] [LBNL]
Department of Physics [Berkeley]
Lawrence Berkeley National Laboratory [Berkeley] [LBNL]
LONG, Jeffrey
Department of Chemical and Biomolecular Engineering [Los Angeles]
Department of Chemistry [Berkeley]
< Reduce
Department of Chemical and Biomolecular Engineering [Los Angeles]
Department of Chemistry [Berkeley]
Language
en
Article de revue
This item was published in
Nature Communications. 2022, vol. 13, p. 5766
Nature Publishing Group
English Abstract
Electronic synergy between metal ions and organic linkers is a key to engineering molecule-based materials with a high electrical conductivity and, ultimately, metallicity. To enhance conductivity in metal-organic solids, ...Read more >
Electronic synergy between metal ions and organic linkers is a key to engineering molecule-based materials with a high electrical conductivity and, ultimately, metallicity. To enhance conductivity in metal-organic solids, chemists aim to bring the electrochemical potentials of the constituent metal ions and bridging organic ligands closer in a quest to obtain metal- d and ligand- π admixed frontier bands. Herein, we demonstrate the critical role of the metal ion in tuning the electronic ground state of such materials. While VCl 2 (pyrazine) 2 is an electrical insulator, TiCl 2 (pyrazine) 2 displays the highest room-temperature electronic conductivity (5.3 S cm –1 ) for any metal-organic solid involving octahedrally coordinated metal ions. Notably, TiCl 2 (pyrazine) 2 exhibits Pauli paramagnetism consistent with the specific heat, supporting the existence of a Fermi liquid state (i.e., a correlated metal). This result widens perspectives for designing molecule-based systems with strong metal-ligand covalency and electronic correlations.Read less <
ANR Project
Aimants 2D conducteurs à haute performance obtenus par une approche Chimie de coordination redox
Origin
Hal imported