This analysis is most straightforward for IFR: All dynamic events in this zeolite are associated with a prominent jump in the y coordinate of the respective fluoride anion, which changes by about ~1 Å. This is visualized exemplarily in Figure , all other dynamic events show a qualitatively similar behavior. There are some cases where more than one jump of a single fluoride anion occurs over the course of 7.5 ps. The fluoride trajectory, also visualized in Figure , shows that this movement along the b direction corresponds to a jump between the F@Si6_1 and F@Si6_2 sites, in agreement with the experimentally observed disorder (Figure ). It is interesting to note that this disorder occurs despite the rather large energy difference of 10.6 kJ mol -1 obtained in the DFT optimizations (Figure ). This point will be revisited below, when discussing the role of OSDA dynamics. Figure 5b also shows that, rather than moving along a straight line between the two sites, the fluoride anion follows an arc-like trajectory, thereby maintaining shorter contacts to the framework.