Fig. 4. Fingerprints of combined electronic, spin and structural effects on RIXS spectral features for the three relevant electronic states GS-RIXS, LMCT-RIXS and Quartet-RIXS in the three different optimized structures @GS, @LMCT and @Quartet. The left column shows spectra in the natively optimized structure of the electronic state, the right column spectra in the structure from which the state may be populated. GS-RIXS@GS, as a reference spectrum, is subtracted from the other spectra to indicate spectral differences.