[Molecular characteristics of cyclodextrin molecules, obtained in studies of the properties of their solutions]

Molecules of three cyclodextrins have been studied by molecular hydrodynamics methods in water, dimethylformamide, and dimethylsulfoxide. The molecular masses have been estimated, and the values correlate well with the calculated values. The hydrodynamic radii of cyclodextrin molecules have been also determined. The experimental data have been compared with theoretical calculations for toroidal molecules. The experimental data may be reconciled with the theoretical on the assumption that solvent molecules are adsorbed on the external surface of cyclodextrin molecules.