Abstract
A series of mononuclear hexacoordinate iron(III) complexes, [Fe( 5 L )(py)]BPh 4, and binuclear hexacoordinate iron(III) complexes, [( 5 L )Fe(μ 2-bpy)Fe( 5 L )](BPh 4) 2, has been prepared and their magnetic properties were investigated; the pentadentate ligands were derivatives of 5 L =saldptn=N,N′-bis(2-hydroxybenzyliden)-1,7-diamino-4-azaheptane. Temperature variation of the effective magnetic moment for them shows that a spin transition from the low-spin to the high-spin state occurs. The magnetic data were fitted to an Ising-like model appropriate for the mono- and binuclear systems.
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