Crystal structure of mono[3-(2-imidazolylthio)]-altro-(beta)-cyclodextrin: elliptical distortion of the cavity and unique Yin–Yang stacking

The title compound is elliptically distorted due to the unusual 1C4 geometry of the altrose portion. In packing, a unique fourfold helical structure is elaborated with head-to-head dimers as the repeating motif. The imidazolyl moieties mutually reside on each otherʹs cavities thereby resembling the Yin–Yang type balancing of antagonisms.