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Azulene and aromaticity - Printable Version

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Azulene and aromaticity - Hyman - 04-12-2018

Hi.


My question is: why is this structure of azulene not considered aromatic?

[Image: 180px-Azulen_num.svg.png]

It's planar, with sp2 carbons and obeys Huckel's rule with 10 pi electrons.