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While aromatic rings with equal numbers of \u03c0\u2010electrons and ring atoms such as benzene are particularly stable, those with the minimally required two \u03c0\u2010electrons are very rare and yet remain limited to three\u2010 and four\u2010membered rings if not stabilized in the coordination sphere of heavy metals. Here we report the facile synthesis of a dipotassium cyclopentagallene, a unique example of a five\u2010membered aromatic ring stabilized by only two \u03c0\u2010electrons. Single\u2010crystal X\u2010ray diffraction revealed a planar Ga<jats:sub>5<\/jats:sub> ring with almost equal gallium\u2013gallium bond lengths, which together with computational and spectroscopic data confirm its aromatic character. Our results prove that aromatic stabilization goes far beyond what has previously been assumed as minimum \u03c0\u2010electron count in a five\u2010atom ring fragment.<\/jats:p>","DOI":"10.1002\/anie.202206963","type":"journal-article","created":{"date-parts":[[2022,5,20]],"date-time":"2022-05-20T07:26:17Z","timestamp":1653031577000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["A Planar Five\u2010Membered Aromatic Ring Stabilized by Only Two \u03c0\u2010Electrons"],"prefix":"10.1002","volume":"61","author":[{"given":"Oleksandr","family":"Kysliak","sequence":"first","affiliation":[{"name":"Institute of Inorganic and Analytical Chemistry (IAAC) Friedrich Schiller University Jena  Humboldtstra\u00dfe 8 07743 Jena Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon H. 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