Experimental and theoretical shakeup studies. IV. Main group Me2M (M=Zn,Cd,Hg) compounds

We report the first observation of shakeup in the core level ESCA of main group metal compounds. By recording the C 1s and metal (Zn 2p, Cd 3d, Hg 4f) level of Me2M (M=Zn, Cd, and Hg) to high statistics, satellite structures on the higher binding energy side of the respective primary photolines are observed. The peaks are assigned to shakeup transitions by theoretical Xα–SW calculations. Good agreement for both energies and intensities is obtained for the metal core level spectra. The calculations yield C 1s intensities which are much smaller than those observed experimentally.