Ligand–ligand interactions and low frquency vibrations in Ir(C2H4)4Cl and [Ir(C2H4)2Cl]2 studied by inelastic neutron scattering and optical spectroscopy
Abstract
Incoherent inelastic neutron scattering spectra of Ir(C2H4)4Cl and [Ir(C2H4)2Cl]2 have been obtained and a model is porposed for the interaction between the ethylene ligands in Ir(C2H4)4Cl. For this complex the torison of the axial C2H4 ligand is assigned at 45 ± 4 cm–1 and the in-phase and out-of-phase torsions of the equatorial ligands assigned at 172 ± 10 and 240 ± 10 cm–1, respectively.