Close similarity of the electronic structure and electron correlation in gas-phase and solidC60

We present a study of the electronic structure and electron correlation effects in gas-phase and solid ${\mathrm{C}}_{60}$ clusters. Direct in situ comparison of C 1s absorption spectra taken in the gas phase with those from solid ${\mathrm{C}}_{60}$ reveals a close similarity. This is also true for the shake-up satellites in the C 1s x-ray-photoelectron spectrum. The main conclusions are that solid-state interactions play only a minor role in this new material, and electron correlation effects are predominantly intramolecular.