As it can be seen in Fig. , the dissociative wave packet dynamics in the core-excited state leads to a strong distortion of the line shapes of the final electronic states populated in the RIXS process. Moreover, the results are very sensitive on the choice of theoretical methodology used to compute the potential energy curves, as discussed above. Most striking is the profile for decay to the analogously dissociative pair of 1t 1g final states, in this case a splitting is observed, typical for decay between two dissociative curves arising from fast decay near the vertical point and decay from stretched bond geometries. Decay from the wave packet in a stretched S-F bond leads to second peak located at higher energy losses than fast decay near the vertical point.