The electronic structure of transition metal complexes containing organic ligands

Abstract
The He(I), He(II) and X-ray photoelectron spectra of iron tricarbonyl trimethylenemethane are reported, and these measurements, together with the bonding in the complex, are discussed with the aid of ab initio SCF MO calculations. The organic ligand is found to bear a net negative charge, and, as was found for other complexes, the position of the low energy photo-electron bands arising from the metal orbitals are inaccurately predicted using Koopmans' theorem.