title: Synthesis and characterization of mononuclear hydroxamato and hydroximato complexes of iron(III) based on the tris-(2-pyridylmethyl)amine ligand.
abstract: The reaction of acetohydroxamic (CH3C(O)-NHOH), benzhydroxamic acid (PhC(O)-NHOH) or 1-hydroxypyridin-2(1H)-one (pyrC(O)-NOH) in the presence of tris-(2-pyridylmethyl)amine (TPA), sodium methoxide and an iron(III) salt yields the mononuclear complexes [Fe(TPA)(CH3C(O)-NHO)]2+ (), [Fe(TPA)(PhC(O)-NHO)]2+ () and [Fe(TPA)(pyrC(O)-NO)]2+ (). The hydroxamato complexes and are easily converted to their hydroximato form [Fe(TPA)(CH3C(O)=NO)]+ () and [Fe(TPA)(PhC(O)=NO)]+ () by addition of base. The complexes described were characterized by UV-vis spectroscopy, EPR and cyclic voltammetry, as well as single-crystal X-ray crystallography for and .
authors.affiliation: Laboratoire de Chimie et Biochimie Toxicologiques et Pharmacologiques, UMR 8601 CNRS, Université Paris Descartes, 45 rue des St-Pères, 75270 Paris Cedex 06, France.
authors.forename: Erwan
authors.initials: E
authors.lastname: Galardon
authors.forename: Mohamed
authors.initials: M
authors.lastname: Selkti
authors.forename: Pascal
authors.initials: P
authors.lastname: Roussel
authors.forename: Alain
authors.initials: A
authors.lastname: Tomas
authors.forename: Isabelle
authors.initials: I
authors.lastname: Artaud
mesh_terms: D018360:Crystallography, X-Ray; D004563:Electrochemistry; D004578:Electron Spin Resonance Spectroscopy; D005290:Ferric Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D006877:Hydroxamic Acids / Q000138:chemical synthesis*; D008024:Ligands; D008968:Molecular Conformation; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005290:Ferric Compounds; D006877:Hydroxamic Acids; D008024:Ligands; D012997:Solvents; C074579:iron (III) hydroxamate; C525239:tris(2-pyridylmethyl)amineFe(III)Cl