C-60 complexes with dianthracene and triptycene: synthesis and crystal structures.

New molecular complexes of fullerene C-60 with aromatic hydrocarbons TPC . C-60 and DAN . C-60(C6H6)(3), were obtained. For the first time a three-dim ensional packing of fullerene molecules is observed in TPC C-60. The DAN . C-60(C6H6)(3) complex has a layered structure with alternating sheets of C- 60 and donor molecules. Complexes with strong van der Waals interaction wer e formed due to the shape concordance between the TPC, DAN and spherical C- 60 molecules. XPS spectroscopy of the complexes showed the suppression of p i-pi* transitions in TPC and DAN phenyl rings in the complexes due to the d onor-C-60 interaction.