Dynamic behavior of n-octylammonium ions intercalated into saponite was investigated by H-2 and H-1 solid NMR method, Obtained data indicate distributions in the rate of cationic axial reorientations characterized by the heterogeneity of charge distribution in the saponite layer plane. Above ca. 400 K, in-plane random reorientations of cations were observed as a new kind or motion in the 2-D ionic system.