A new iron(III) complex of the glycine derivative of amine-chloro substituted phenol ligand (H3LGDC) has
been prepared and characterized by IR, 1H NMR, UV–Vis spectroscopic techniques, cyclic voltammetry,
ESI-MS and magnetic susceptibility studies. X-ray analysis reveals that in iron complex of FeLGDC the
iron(III) center has a distorted trigonal bipyramidal coordination sphere and is surrounded by an amine
nitrogen, a carboxylate, a water and two phenolate oxygen atoms. The DFT calculations with the UB3LYP/
6-311++G level optimized structure of the complex are in good agreement with experimental X-ray
structural data. The variable-temperature magnetic susceptibility indicates that FeLGDC is the paramagnetic high spin iron(III) complex. It has been shown that electrochemical oxidation of this complex is
ligand-centered due to the oxidation of phenolate to the phenoxyl radicals. This enzyme mimic utilized
molecular oxygen in carrying out the oxidative cleavage of catechols with complete conversion at room
temperature.
کلید واژگان :
Amine bis(phenolate) Non-heme iron Model complex Iron complex
