Touching the upper limit for ferromagnetic interactions in hetero-bridged dinuclear [Cu_2~(II) ] complexes using a novel N_5-dinucleating ligand bearing an endogenous monoatomic amido(R-NH~-)-bridging group

摘要

A novel Ns-dinudeating ligand 4-amino-3,5-bis(bipyridine-2-yl)-1,2,4-triazole allows the preparation for the first time, and under mild conditions, of single and mixed amido(R-NH )-bridged copper(n) complexes, the latter exhibiting very strong ferromagnetic coupling.