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].
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).
Wu
R
R
School of Chemical Sciences, University of East Anglia, Norwich, UK.
Jayasooriya
U A
UA
Cannon
R D
RD
D005290:Ferric Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010103:Oxygen Isotopes; D013055:Spectrophotometry, Infrared / Q000379:methods
D005290:Ferric Compounds; D010103:Oxygen Isotopes; D010100:Oxygen