title: Axial ligand substituted nonheme FeIV=O complexes: observation of near-UV LMCT bands and Fe=O Raman vibrations.
abstract: Axial ligand substitution of a mononuclear nonheme oxoiron(IV) complex, [FeIV(O)(TMC)(NCCH3)]2+ (1) (TMC = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane), leads to the formation of new FeIV=O species with relatively intense electronic absorption features in the near-UV region. The presence of these near-UV features allowed us to make the first observation of Fe=O vibrations of S = 1 mononuclear nonheme oxoiron(IV) complexes by resonance Raman spectroscopy. We have also demonstrated that the reactivity of nonheme oxoiron(IV) intermediates is markedly influenced by the axial ligands.
authors.affiliation: Department of Chemistry and Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea.
authors.forename: Chivukula V
authors.initials: CV
authors.lastname: Sastri
authors.forename: Mi Joo
authors.initials: MJ
authors.lastname: Park
authors.forename: Takehiro
authors.initials: T
authors.lastname: Ohta
authors.forename: Timothy A
authors.initials: TA
authors.lastname: Jackson
authors.forename: Audria
authors.initials: A
authors.lastname: Stubna
authors.forename: Mi Sook
authors.initials: MS
authors.lastname: Seo
authors.forename: Jimin
authors.initials: J
authors.lastname: Lee
authors.forename: Jinheung
authors.initials: J
authors.lastname: Kim
authors.forename: Teizo
authors.initials: T
authors.lastname: Kitagawa
authors.forename: Eckard
authors.initials: E
authors.lastname: Münck
authors.forename: Lawrence
authors.initials: L
authors.lastname: Que
authors.forename: Wonwoo
authors.initials: W
authors.lastname: Nam
mesh_terms: D007501:Iron / Q000737:chemistry*; D008024:Ligands; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013059:Spectrum Analysis, Raman / Q000379:methods*; D014732:Vibration
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D007501:Iron; D010100:Oxygen