Although compounds ßI and ßII are of dinuclear nature in the solid and dissolved state, both respective spectra exhibit no m/z peak above the mononuclear molecular ion peak, which implies the low stability of the dimers under EI-MS conditions, that were considered in detail above. This inherently confirms the formation of the target compounds and comparably indicate a higher stability of the ß-ketoiminates under these conditions. Interestingly, compounds ßI and ßII exhibit less peaks with high intensities, while for compounds ßIII and ßIV, a more detailed fragmentation behavior is observed. Nevertheless all compounds show the characteristic fragments for decomposition of transition metal ß-diketoiminates, such as the cleavage of one ligand ([M-L] + ) which is the most dominant peak for compounds ßI and ßII, while for ßIII and ßIV, the intensities are 77 % and 25 %, respectively.