If the physical properties of C60 fullerene molecules can be controlled in C60 products already in use in various applications, the potential for industrial development will be significant. Encapsulation of a metal atom in the C60 fullerene molecule is a promising way to control its physical properties. However, the isolation of C60 -based metallofullerenes has been difficult due to their insolubility. Here, we report the complete isolation and determination of the molecular and crystal structure of polar cationic Li@C60 metallofullerene. The physical and chemical properties of Li@C60 cation are compared with those of pristine C60. It is found that the lithium cation is located at off-centre positions in the C60-Ih cage interior and that the [Li+ @C60] salt has a unique two-dimensional structure. The present method of purification and crystallization of C60 -based metallofullerenes provides a new C60 fullerene material that contains a metal atom.
ASJC Scopus subject areas
- Chemical Engineering(all)