C-60 and C-70 single crystals free from solvent contamination were gro
wn from their vapor. Large C-60 crystals up to a size of about 5 x 3 x
3 mm(3) and C-70 crystals of about 1 X 1 X 1 mm(3) were obtained. Mor
phological measurement and X-ray diffraction analysis of C-60 crystals
showed two types of morphological faces, namely {111} and {100},frequ
ently with twinning on {111} faces. C-70 crystals obtained have an hcp
structure with a = 10.1 Angstrom and c 18.7 Angstrom.