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It is demonstrated that in fullerene C70 which can be considered as adeformed fullerene C60 in some sense there is a withdrawal of anelectrodynamical forbiddance of a strong quadrupole light-molecule interactionwhich is realized in the fullerene C60. This situation occurs because of thereduction of symmetry of C60 from the icosahedral symmetry group Yh to thegroup D5h. The withdrawal results in appearance of the lines in the SERSspectra of C70 which are forbidden in usual Raman scattering and are allowed ininfrared absorption while such lines are forbidden in the SERS spectrum of thefullerene C60 due to the electrodynamical forbiddance. The measured SERSspectra of C70 demonstrates existence of such lines that strongly confirms ourideas about the dipole quadrupole SERS mechanism.

Electrodynamical forbiddance of a strong quadrupole light-molecule interaction in fullerene C60 and its withdrawal in fullerene C70