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

Abstract

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.