The infrared (IR) spectra of TDAE-C-60 polycrystalline samples have been st
udied at 4-300K temperature range. The tentative assignment of [C-60](-) ba
nds and most intensive TDAE(+) bands have been proposed. The substantial in
crease of the integral intensities of the C-N bonds stretching vibrations a
nd a blue shift (up to 10 cm(-1)) of their frequencies are observed on cool
ing, while the intensities and frequencies of [C-60](-) modes remain practi
cally unchanged. The possible mechanism of these phenomena is discussed.