We present the results of C-13 NMR measurements on A(x)C(60) compounds
(A = K, Rb and x = 3, 4, 6). By using high-resolution MAS NMR spectro
scopy we were able to identify and characterize the different, thermod
ynamically stable phases of A(x)C(60). Based on an analysis of the dif
ferent NMR spectra we discuss the effects of the intercalation on the
electronic properties and molecular dynamics in these compounds.