Abstract
The pentadentate ligand 5 LH 2 = saldptn = N,N′-bis(1-hydroxy-2-benzyliden)-1,7-diamino-4-azaheptane has been prepared by a Schiff base condensation between 1,7-diamino-4-azaheptane and the corresponding salicyaldehyde. Its complexation with Fe(III) gave the high-spin ( S=5/2) complex of [Fe III ( 5 L)Cl]. This precursor was combined with [Fe(CN) 6] 4− and a blue heptanuclear complex [Fe II{(CN)Fe III ( 5 L)} 6]Cl 2 resulted. This system belongs to the class of high-spin molecules possessing twelve unpaired electrons ( S=6) as proven by the magnetic susceptibility measurements and Mössbauer spectra.
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