The first induced circular dichroism (ICD) analyses of diazirine@cyclodextrin inclusion complexes are reported. The stoichiometries and association constants of the guest@host complexes with alpha-, beta-, and gamma-cyclodextrin were determined. In;addition, with the cl-cyclodextrin complex, UV-vis spectroscopy of water-ethanol solutions showed remarkable fine structure, probably indicating that the diazirine experiences a:nonpolar microenvironment. These analytical methods provide details about the architecture and nature of these supramolecular carbene precursors.