摘要
In recent years,the stable existence of the C<sub>180</sub> has been observed in mass spectroscopy.The existence of C<sub>180</sub>, C<sub>540</sub>,…with I<sub>h</sub> symmetry can be calculated theoretically, and it has been expected that C<sub>540</sub> is a stable construction.
基金
Project supported by the National Natural Science Foundation of China.