Additional calculations which were not previously performed are presented . The main point of this paper is to show a possibility of a local-pair formation by use of the results obtained within the H ckel method. Calculated results of the formation energies of the electron local pairs on the C60 clusters are included.
Some mixtures consisting at least of two different isomer ions have negative formation energies .
On the other hand, the MNDO calculations show that the electron local pairs can be formed for single isomer ions. However, the present study is able to explain why the doped fullerides become superconductors depending on the doping of the C60 molecule. Solecki, J. Kasperczyk, I.V. Kityk, J. Napieralski, M.Czerwi ski, Phys.