info:eu-repo/semantics/article
Tailoring the exchange interaction in covalently linked basic carboxylate clusters through bridging ligand selection
Fecha
2012-08Registro en:
Alborés, Pablo; Plenk, Christian; Rentschler, Eva; Tailoring the exchange interaction in covalently linked basic carboxylate clusters through bridging ligand selection; American Chemical Society; Inorganic Chemistry; 51; 15; 8-2012; 8373-8384
0020-1669
CONICET Digital
CONICET
Autor
Alborés, Pablo
Plenk, Christian
Rentschler, Eva
Resumen
We are reporting new dimeric units of basic carboxylates bearing the {Fe III 2M IIO} motif for M = Co and Ni, covalently bound through the tetradentate bridging (LL) 2,2′-azopyiridine (azpy) and 2,3-di(2-pyridyl)quinoxaline ligands (dpq). We structurally characterized the hexanuclear clusters, and their magnetic properties have been fully analyzed. DFT calculations have been performed as a supplementary tool. All results evidence a weak antiferromagnetic interaction through the bridging ligands between isolated spin ground states arising from intra-Fe 2MO core exchange couplings. Together with the pioneer 2,2′-bipyrimidine bridged systems, the new complexes reported constitute a family of complexes where the exchange interaction can be tuned by the selection of the bridging LL type ligand. © 2012 American Chemical Society.