Pentagonal-Dodecahedral La2 Charge Density in [80-Ih]Fullerene: La2@C80

Abstract
A double shell of Platonic solids: A trajectory that connects the six‐membered rings of Ih‐C80 is followed by the two La atoms of La2@C80 according to maximum entropy/Rietveld analysis of the synchrotron powder‐diffraction data. The result is a pentagonal‐dodecahedral charge‐density distribution for La2 (brown in the picture) inside the icosahedral C80 cage (green).