Axial ligand substituted nonheme FeIV=O complexes: observation of near-UV LMCT bands and Fe=O Raman vibrations.
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.
Sastri
Chivukula V
CV
Department of Chemistry and Center for Biomimetic Systems, Ewha Womans University, Seoul 120-750, Korea.
Park
Mi Joo
MJ
Ohta
Takehiro
T
Jackson
Timothy A
TA
Stubna
Audria
A
Seo
Mi Sook
MS
Lee
Jimin
J
Kim
Jinheung
J
Kitagawa
Teizo
T
Münck
Eckard
E
Que
Lawrence
L
Nam
Wonwoo
W
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
D008024:Ligands; D009942:Organometallic Compounds; D007501:Iron; D010100:Oxygen