As I understand, if a molecule is cyclic and planar, then every atom in the ring must be $\ce{sp^2}$-hybridized and the molecule must have [4n+2] π electrons, where n∈N (Hückel’s rule).

An article in Chemistry World by Sam Howell ("New rule predicts stabilising aromaticity in open-shell metal clusters", 21 MAY 2019), talks about jellium aromaticity.

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image source : https://www.chemistryworld.com/news/new-rule-predicts-stabilising-aromaticity-in-open-shell-metal-clusters/3010515.article

My question is what is jellium aromaticity?

Does it have anything to do with Hückel's rule?

  • $\begingroup$ Helpful: ncbi.nlm.nih.gov/pubmed/30997449 $\endgroup$
    – user79161
    May 23 '19 at 8:05
  • $\begingroup$ @user79161 this link leads to abstract and a paywall.Further it talks about spherical aromaticity. Now that $\endgroup$ May 23 '19 at 8:14
  • $\begingroup$ @user79161 Sperical aromaticity ??? That will wartent a seperate question. $\endgroup$ May 23 '19 at 8:16
  • $\begingroup$ I can't help with the paywall in any legal way, I'm afraid. Secondly, it pertains to jellium aromaticity as analogy to spherical one, as you noted. Thirdly, I regret you didn't find it helpful. $\endgroup$
    – user79161
    May 23 '19 at 8:33
  • 1
    $\begingroup$ As a comment I can say that aromaticity is used to mean an extra stability. For starting refer to Hirsch aromaticity in Wikipedia $\endgroup$
    – Alchimista
    May 23 '19 at 10:57

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