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Reprint of: UPS of buckminsterfullerene and other large clusters of carbon

S.H. Yang, C.L. Pettiette, J. Conceicao, O. Cheshnovsky, R.E. Smalley
2013 Chemical Physics Letters  

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Ultraviolet photoelectron spectra (UPS) are reported for mass-selected negative carbon clusters extracted from a pulsed supersonic beam. In the size range from 48 to 84 atoms, three clusters were found to be closed-shell species with appreciable HOMO-LUMO gaps: C 50 (0.3-0.6 eV), C 60 (1.5-2.0 eV), and C 70 (0.7-1.2 eV). UPS data for all other clusters revealed no appreciable HOMO-LUMO gap, indicating they are either open-shell species, or closed-shell species with small HOMO-LUMO gaps.
more » ... terfullerene (C 60 ) was found to have the lowest electron affinity (2.6-2.8 eV) of any cluster. Agreement between these UPS data and electronic structure calculations strongly support the spheroidal shell model for C 60 .
doi:10.1016/j.cplett.2013.08.063 fatcat:65niyjsqczhr3cgzjdl4c4zcz4
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Citation

S.H. Yang, C.L. Pettiette, J. Conceicao, O. Cheshnovsky, R.E. Smalley. "Reprint of: UPS of buckminsterfullerene and other large clusters of carbon." Chemical Physics Letters (2013) 31-34