Figure 6.

Spatial distribution functions computed with the TRAVIS software⁸⁷ for atoms in NTf₂^– around Bmim⁺ and BmPyrr⁺ at 400 K. Left and right panels are at the same isovalue. We see from these figures that there is a large and directional probability of finding anions on one side of the Bmim⁺ ring, but the distribution around BmPyrr⁺ is much more symmetrical and multidirectional. When the isovalue is increased in the inset, the figure for Bmim⁺ almost does not change, whereas BmPyrr⁺ has almost no contributions at this level highlighting the difference in the angular accumulation of the anions around each of the cations.