1,2-Bis(4,4′-dipyridinium)ethane: a versatile dication for the formation of [2]rotaxanes with dibenzo-24-crown-8 ether

Abstract

The 1,2-bis(4,4′-dipyridinium)ethane dication threads through dibenzo-24-crown ether (DB24C8) to form a [2]pseudorotaxane which is easily stoppered to form [2]rotaxanes either by alkylation or coordination of a transition metal complex.

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