On the Unusual Global Aromaticity of Two Cyclopenta‐Ring‐Fused Oligo(m‐Phenylenes)
Francesco F. Summa,
Riccardo Zanasi,
Slađana Đorđević
et al.
Abstract:Some years ago, Jishan Wu reported the synthesis of 8MC and 10MC, two homologues of the cyclopenta‐ring‐fused oligo(m‐phenylene) macrocycles mMC, each behaving as an annulene‐within‐an‐annulene (AWA). This was a surprising result as the AWA behavior is rare. Both molecules have a partial polyradical character, enforced by the quest for restoring some aromatic character of benzene rings. However, that restoration brings back some coupling between the two annulenes. Indeed, we found that the geometry and the mag… Show more
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