Structural organization of fullerenes C-60, C-70, C-84

An overview is given of structural organization of fullerene crystals of C- 60, C-70, C-84 including the phases taking place at lower temperature when molecules order. Recently, evidences were obtained for a phase transition i n C-84 and for a metastability of phases in C-70 A particular attention is paid to the symmetry properties of phases and to mesoscopic structures due to domains, domain walls, and other extended defects in these materials.