Synthesis and Characterisation of a New Schiff‐Base‐like Ligand and its Iron(II) Complexes

Abstract

AbstractThe reaction of iron(II) acetate with the tetradentate Schiff base like ligand H2L [(E,E)‐[{diethyl 2,2’‐[4,5‐dihydroxy‐1,2‐phenylenebis(iminomethylidyne)]bis3‐oxobutanato}]) leads to the formation of the octahedral N2O4 coordinated complex [FeL(MeOH)2]·MeOH (1). Conversion of 1 with N‐methylimidazole (N‐meim) leads to the N4O2 coordinated complex [FeL(N‐meim)2]·MeOH (2). Both complexes are pure HS compounds that were characterised using magnetic measurements and X‐ray crystallography. A special attention was given to the role of the two hydroxyl groups at the phenyl ring on the formation of a hydrogen bond network and the influence of this network on the magnetic properties.