title: Vibrational coupling in oxo-centred trinuclear clusters: oxygen-16/18 isotopic substitution studies of [Fe3III(O)(O2CC(CH3)3)6(py)3][FeCl4] and [Fe2(III)FeII(O)(O2CC(CH3)3)6(py)3].
abstract: IR spectra are reported for the compounds [Fe3O(O2CC(CH3)3)6(py)3][FeCl4] and [Fe3O(O2CC(CH3)3)6(py)3]. Using isotopic substitution at the central oxygen atom, the assignments of the in-plane and out-of-plane vibrations of this atom are confirmed, and coupling is demonstrated between the in-plane modes v(as)(Fe3O) and carboxylate deformation modes rho(r)(C-CO2).
authors.affiliation: School of Chemical Sciences, University of East Anglia, Norwich, UK.
authors.forename: R
authors.initials: R
authors.lastname: Wu
authors.forename: U A
authors.initials: UA
authors.lastname: Jayasooriya
authors.forename: R D
authors.initials: RD
authors.lastname: Cannon
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010103:Oxygen Isotopes; D013055:Spectrophotometry, Infrared / Q000379:methods
chemical_list: D005290:Ferric Compounds; D010103:Oxygen Isotopes; D010100:Oxygen