Is a Shake up Process Responsible for the Multi-peak Structure of the X-ray Photoelectron Spectra of Metal Hexacarbonyls?

Abstract

The X-ray photoelectron energy spectra of chromium, molybdenum and tungsten hexacarbonyls are found to show a multi-peak structure. This is particularly remarkable in the C_1S and O_1S binding energy region. This peculiarity is tentatively interpreted on the basis of a double excitation process involving the ionization and simultaneous excitation of a valence electron