A CROSS-POLARISATION-MAGIC-ANGLE SPINNING 13C-N.M.R. STUDY OF SOLID-STATE CYCLOAMYLOSE INCLUSION-COMPLEXES WITH SUBSTITUTED BENZENES: 13C-CHEMICAL SHIFTS AND MOLECULAR DYNAMICS OF THE INCLUDED GUESTS

Article abstract of DOI:10.1016/0008-6215(84)85294-5

The chemical shifts and line-shapes of cross-polarisation-magic-angle sample spinning 13C-n.m.r. resonances have been analysed for p-nitrophenol, p-hydroxybenzoic acid, benzoic acid, and m-nitrophenol in the solid state and likewise for inclusion complexes with host cyclomalto-hexaose and -heptaose.The trends of the chemical-shift displacements induced by complexation with the cycloamyloses in the solid state did not fully correspond with those for solutions.The line-shapes showed evidence of the rotational motion of the benzene compounds in the cavity of cyclomaltohexaose, but not in that of cyclomaltoheptaose.