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À propos de : Strong Ferromagnetic Exchange Couplings in Copper(II) and Nickel(II)Complexes with a Paramagnetic Tridentate Chelate Ligand, 2,2‘-Bipyridin-6-yltert-Butyl Nitroxide        

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  • Strong Ferromagnetic Exchange Couplings in Copper(II) and Nickel(II)Complexes with a Paramagnetic Tridentate Chelate Ligand, 2,2‘-Bipyridin-6-yltert-Butyl Nitroxide
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  • A paramagnetic ligand 6bpyNO (2,2‘-bipyridin-6-yl tert-butyl nitroxide) is a newcomer in the field of metal-radical hybrid magnetic materials. Complexes [CuII(6bpyNO)Cl2] and [NiII(6bpyNO)2](PF6)2 having highly planar chelate rings showed considerably strong ferromagnetic exchange couplings J/kB = 202 and 192 K, respectively, across the direct radical oxygen coordination bonds (the spin Hamiltonian is defined as −2JSi·Sj).
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