Temperature behaviour of FT-IR spectra of single crystals of C60 complexes with organic donors

In this paper we describe the temperature dependencies of the Une shift, Une width, amplitude and integral absorbance of selected vibrational modes of C60 molecular complexes and clathrate mainly in the region of their phase transitions. The data presented in this paper have been obtained for the first time for the single crystals of the investigated complexes. Some general considerations on the T-dependencies of the IR modes are also presented.