3D FREE-ELECTRON MODEL FOR C-60

As a model for the electronic structure of C60, the Schrodinger equati on has been solved for a free electron in a spherical shell of finite width. Once the mean radius is fixed at its experimental value and imp osing the experimental condition of a single electronic shell, the dif ferences between energy levels are almost independent of the parameter s of the model: shell width and potential depth. They are close to the values obtained from a 2D model of a free-electron on a sphere.