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Ferromagnetic Coupling in the Bis(μ‐end‐on‐azido)iron( III ) Dinuclear Complex Anion of [Fe II (bpym) 3 ] 2 [Fe(N 3 ) 10 ]·2H 2 O

1997; Wiley; Volume: 36; Issue: 13-14 Linguagem: Inglês

10.1002/anie.199714591

1521-3773

Giovanni De Munno, Teresa Poerio, Guillaume Viau, Miguel Julve, Francesc Lloret,

Metal-Catalyzed Oxygenation Mechanisms

An energetically low-lying spin state with S = 5 is observed in the title compound, in which low-spin iron(II) [Fe(bpym)3]2+ and high-spin iron(III) [Fe2(N3)10]4− ions coexist. The magnitude of the ferromagnetic coupling in the dimer (J = + 4.8 cm−1) is twice that reported for a high-spin MnII complex with the same bridging ligands. The structure of the anion is shown on the right.