research papers
The structure of a particular type of hollow cage fullerenes (C60+N18) is described in detail, and their existence explained from a symmetry-breaking mechanism starting from the perfect icosahedral symmetry of C60 to specific subgroups A2. This mechanism expands previous results describing the existence of other groups of fullerenes (C60+N10) based on the breaking of the icosahedral symmetry of C60 to the subgroup H2. The mechanism is extended to describe the cases that generate carbon nanotubes, as well as stereoisomers of the C78 molecule.