A 13C cross polarization–magic angle spinning (CP-MAS) n.m.r. study of crystalline cyclohexa-amylose inclusion complexes. Conformation-dependent 13C chemical shifts are related to the dihedral angles of glycosidic linkages
Abstract
13 C Chemical shifts of the C-1 and C-4 atoms of crystalline cyclohexa-amylose enclosing a variety of guest molecules are significantly displaced as a result of host–guest interaction and are related to the dihedral angles (ϕ and ψ) at the linkages.