Induced Circular Dichroism of β-Cyclodextrin Complexes with o−, m−, and p-Disubstituted Benzenes

Abstract
The induced circular dichroism (ICD) spectra of β-cyclodextrin (β-CDx) complexes with o, m, and p-disubstituted benzenes were observed. The comparison of the observed rotational strengths with the ones calculated by using the Kirkwood-Tinoco expression is examined; the possible orientations of the guest molecules which are included in the cavity of β-CDx are presented. These results suggest that the orientation of the guest molecule is confined about the axis of the β-CDx torus.