Possibility of coupling to haloform molecules in intercalated C60 -: art. no. 161402

For field-effect-doped fullerenes it was reported that the superconducting transition temperature T-c is markedly larger for C(60)2CHX(3) (X=Cl,Br) crystals, than for pure C-60. As a possible mechanism it was proposed that there is not only coupling to the vibrational modes of the C-60 molecule, but also to the modes of the intercalated molecules. We investigate the possiblity of such a coupling. We find that, assuming the ideal bulk structure of the intercalated crystal, both a coupling due to hybridization of the molecular levels, and a coupling via dipole moments should be very small.