Core electron spectroscopy of chromium hexacarbonyl. A comparative theoretical and experimental study

We explore the notion of using a transition metal compound as a bridge betw een the free and the surface adsorbed species for the interpretation of cor e electron spectroscopies. Calculations for this purpose are carried out fo r carbon and oxygen X-ray absorption, X-ray emission and X-ray core electro n shake-up spectra for Cr(CO)(6), and the results are compared with previou s calculations on free CO and on CO-copper clusters. A detailed analysis of spectra is made with some previous assignments being revised. Experimental non-resonant and resonant X-ray emission spectra are presented.