RESONANT AND NONRESONANT X-RAY-SCATTERING FROM C-70

Resonant and non-resonant X-ray scattering spectra of the C-70 molecul e are presented and analyzed by ab initio Hartree-Fock calculations us ing a newly developed formalism for symmetry selective inelastic X-ray scattering. Compared to C-60, a weak excitation energy dependence of the spectral features is observed. The change from 'soccer-ball' (I-h) to 'rugby-bail' (D-5h) shapes leads to less symmetry selectivity but larger polarization selectivity. In contrast to C-60, the RIXS spectru m of C-70 molecule is dense even for narrow-band excitation.