Cover Image, Volume 36, Issue 2

Encapsulating rare‐gas atoms into fullerenes smaller than C 60 quickly becomes repulsive and follows an exponential law with decreasing number of carbon atoms. The reason comes from a rather rigid cage structure that determines the space available inside the fullerene. On page 88 (DOI: 10.1002/jcc.23787 ), Rebecca Sure, Ralf Tonner, and Peter Schwerdtfeger provide detailed insight into rare‐gas fullerene interactions ranging from C 20 to C 60 and from He to Ar using Grimme's dispersion corrected density functional theory. The maximum inscribing inner sphere inside a fullerene cage gives a good qualitative picture for the space available.