Since the shape of C-70 molecule is prolate spheroidal, the same shape
is assigned to the clusters of C-70 molecules and the nucleation para
meters are evaluated using classical nucleation theory. Moreover, C-70
molecule is highly rotational and the rotational energy is included i
n the nucleation kinetics of C-70 molecules. The supersaturation requi
red for condensation of C-70 molecules is high compared to that of C-6
0. This theoretical prediction is compared with experimental observati
ons.