Interpretation of the low energy photoelectron spectra of dimolybdenum(II) and dichromium(II) tetra-µ-carboxylates

Abstract
The photoelectron spectra of dimolybdenum and dichromium tetra-µ-carboxylates are discussed with the aid of Hartree–Fock ab initio calculations of Mo2(O2CH)4 and Cr2(O2CH)4 together with limited correlation effects calculated by the APSG method. An assignment of the spectra in which the metal ionizations are located below 10 eV in both the molybdenum and chromium complexes appears to have some merit and is compared with other assignments in the literature.