From the shapes and widths of the deuteron liquid and solid state spectra of benzene, p‐xylene and ethene sorbed in the zeolites NaX, AgNaX, and NaY the dynamics of the anisotropic reorientational and of the site exchange motions are assessed. Intracrystalline diffusivities are obtained which are generally lower in NaY than in NaX.
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