# What is jellium aromaticity?

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.

My question is what is jellium aromaticity?

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

• Helpful: ncbi.nlm.nih.gov/pubmed/30997449 May 23 '19 at 8:05
• @user79161 this link leads to abstract and a paywall.Further it talks about spherical aromaticity. Now that May 23 '19 at 8:14
• @user79161 Sperical aromaticity ??? That will wartent a seperate question. May 23 '19 at 8:16
• 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. May 23 '19 at 8:33
• As a comment I can say that aromaticity is used to mean an extra stability. For starting refer to Hirsch aromaticity in Wikipedia May 23 '19 at 10:57