Abstract
Abstract A novel ONO-type bis-tridentate ligand L1 was synthesized by a diazocoupling reaction of 3,3′-dihydroxybenzidine with 6-octyl-2-naphthol in 58% yield. Azo-hydrazo tautomerization in L1 was indicated by the NMR and IR spectra. The 1:1 complexation of L1 and Mn(III) or Co(II) ions was confirmed by titration experiments at room temperature. Mn-, Co-, and Cr-based metallo-supramolecular polymers were prepared via the 1:1 complexation of the ditopic ligand with the metal ions at 100 °C. The Mn- and Cr-based polymers exhibited reversible redox properties.
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