Novel Organic Macrocycles With Unique Super-Ring Structure, Global Aromaticity And Polyradical Character
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David Casanova is an independent researcher associated with the Universidad del País Vasco / Euskal Herriko Unibertsitatea, Donostia, Euskadi, Spain.

                       

Novel Organic Macrocycles With Unique Super-Ring Structure, Global Aromaticity And Polyradical Character

The concept of aromaticity is a pivotal one in chemistry used to rationalize the notable stability of unsaturated organic molecules, with the benzene ring being a paramount example. Typical π-conjugated molecules obey the aromaticity rule introduced by Hückel, although other types of aromaticity have been also described, that is Möbius aromaticity in annulenes with Möbius conformation and the Baird’s aromaticity for the lowest spin-triplet state, i.e. with two spin-up unpaired electrons. When benzenoid rings are fused in a polycyclic structure,...

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