title: A proline-based aminophenol ligand: synthesis, iron complexation, magnetic, electronic and redox investigation.
abstract: A new proline-based aminophenol ligand was synthesized by a convenient procedure. The ligand was characterized by (1)H NMR, (13)C NMR and IR spectroscopies, elemental analysis and optical activity measurements. Mononuclear iron(III) complex (FeL(Pro)) of this ligand was synthesized and characterized by IR, UV-vis, ESI-MS, magnetic susceptibility studies and cyclic voltammetry techniques. The equilibrium formation constant of FeL(Pro) and the pure UV-vis spectral profile of the complex was determined by multivariate hard modeling method. The molecular structure of FeL(Pro) determined by ESI-MS consist of two aminophenolate ligands. The variation of magnetic susceptibility with temperature indicates paramagnetic iron(III) in the monomeric complex. FeL(Pro) complex undergo metal-centered reduction, and ligand-centered oxidation.
authors.affiliation: Institute for Advanced Studies in Basic Sciences (IASBS), 45195 Zanjan, Iran.
authors.forename: Hamid
authors.initials: H
authors.lastname: Sheykhi
authors.forename: Elham
authors.initials: E
authors.lastname: Safaei
mesh_terms: D000627:Aminophenols / Q000138:chemical synthesis / Q000737:chemistry*; D005290:Ferric Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D008024:Ligands; D010084:Oxidation-Reduction; D011392:Proline / Q000138:chemical synthesis / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D000627:Aminophenols; D005290:Ferric Compounds; D008024:Ligands; D011392:Proline; D007501:Iron
keywords: Amino acids; Catechol dioxygenase; Iron complexes; Model complex; Non-heme