Molecular crystal structure of a rotaxane. A rotaxane is a chemical compound composed of a linear molecular chain passing through a chainlike molecular ring. The entities that form rotaxanes,the linear and cyclic molecules,are bonded mechanically rather than chemically in what is called a topological bond. Rotaxane-based molecular compounds or molecular machines,have been interesting potential uses in molecular electronics,molecular switching elements and molecular shuttles. Shown is a crystal structure with an cyclodextrin macrocycle | |
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