ABSTRACT
Reaction of C60 with tetrathiotetracene (TTT) gives an adduct of formula (C60)2 · TTT · 0.5CS2. The single crystals and powdered samples of the TTT and (C60)2 · TTT · 0.5CS2 have been spectroscopically characterized. It was shown that the transmission spectra of the adduct contain not only the IR active modes of the components but also numerous features arising from isotopic or solid-state effects due to the symmetry breaking of the C60 molecules.