Zusammenfassung
He, Ne, Ar, Kr and Xe are computed to be bound inside C60 by −0.3, −1.9, −2.5, −7.5 and −5.4 kcal/mol respectively, at the counterpoise-corrected MP2/6-31G** level (using a DZP basis for Kr and Xe). Even though the basis-set superposition error is still quite large at this level, it seems remarkable that there is no destabilization even for Xe@C60. Unlike 3He, which is shielded by −6 ppm in He@C60, 129Xe is predicted to be deshielded in Xe@C60 (by ca. + 60 to +70 ppm) and also in the higher fullerence compounds Xe@C70 and Xe@C84 (by smaller amounts).
