Raman study of the doped fullerene C60·TDAE

Raman studies on powder samples of C60·TDAE are reported in the temperature range of 296 to 14 K. The strongest line Ag(2) shows a doublet at 1454 and 1463 cm−1 whose relative intensities are strongly temperature dependent. The relative intensities of the Hg(7) and Hg(8) modes at 296 K are much higher than those in pure C60 and these intensitites increase at low temperatures. The phonon softening and broadening are compared with the result on alkali-doped C60 and the theoretical calculations.