A butylamine derivative of fullerene was prepared by the reaction of butylamine with fullerene C₆₀. The experimental electrooptical and dipole characteristics of the derivative were compared with the corresponding calculated PM3 data. The reaction product proved to be inhomogeneous in the number of the amine molecules added; it contains polar multiadducts of C ₆₀ with noncentrosymmetric distribution of covalently bound amino groups over the fullerene core.