2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27038Optical absorption spectra of C_70 and C_76 are calculated by a tight binding model with a long ranged Coulomb interaction. The spectrum of C_70 is in overall agreement with the experiment of molecules in a solution. The variations of the spectral shape are discussed relating with the symmetry reduction from C_70 to C_76.LaTeX, 8 pages, 3 figures; Note: Please request figures to one of the Authors. E-mail: harigaya@etl.go.jp, abe@etl.go.jpCondensed Mattertext