Methylnaphthalenes form mixed crystals with C-60. The molecules in the
se crystals are so densely packed, that the flat methylnaphthalene mol
ecules undergo a deformation. The deformation is observed by the shift
of the characteristic infrared and Raman active modes. However the mo
des of the rigid C-60 cage remain at the same positions, indicating th
at the C-60 molecules are not significantly deformed. (C) 1998 Elsevie
r Science B.V.