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Because of their radical character, these compounds may exhibit conflicting \u03b1\/\u03b2 aromaticity, so that the contribution of \u03b1 and \u03b2 electrons to the MCI and NICS has been analysed separately and their values qualitatively interpreted in terms of the 2\n                    <jats:italic>n<\/jats:italic>\n                    +1\/2\n                    <jats:italic>n<\/jats:italic>\n                    rule. All the monocyclic radicals investigated show conflicting \u03b1\/\u03b2 aromaticity. Thus, significant MCI values have been found for one of the spin components, whereas negligible values, even slightly negative, have been obtained for the other spin component. NICS indices confirm the aromatic character reflected by the MCIs and clearly show the antiaromatic or non\u2010aromatic character of the other spin components. The same has been found for the donor rings of the bicyclic pro\u2010aromatic radicals investigated, whereas all the fused benzene rings of these radicals show a clear aromatic character in both spin components. Substitutions at the donor carbon position by strong deactivating groups provoke a small increase of the aromatic character in the aromatic spin components and a significant decrease of the antiaromatic character in the antiaromatic spin components whereas activating groups have little effect.\n                  <\/jats:p>","DOI":"10.1002\/cphc.202400529","type":"journal-article","created":{"date-parts":[[2025,1,24]],"date-time":"2025-01-24T06:27:19Z","timestamp":1737700039000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["\u03b1\/\u03b2 Conflicting Aromaticity Under the Microscope: Study of Pro\u2010Aromatic Radicals"],"prefix":"10.1002","volume":"26","author":[{"given":"Ra\u00fal","family":"Lago\u2010Saavedra","sequence":"first","affiliation":[{"name":"Department of Physical Chemistry University of Vigo  Lagoas-Marcosende s\/n 36310 Vigo Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3756-3563","authenticated-orcid":false,"given":"Ignacio","family":"P\u00e9rez\u2010Juste","sequence":"additional","affiliation":[{"name":"Department of Physical Chemistry University of Vigo  Lagoas-Marcosende s\/n 36310 Vigo Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9688-2658","authenticated-orcid":false,"given":"Marcos","family":"Mandado","sequence":"additional","affiliation":[{"name":"Department of Physical Chemistry University of Vigo  Lagoas-Marcosende s\/n 36310 Vigo Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,2,5]]},"reference":[{"key":"e_1_2_9_1_1","volume-title":"Aromaticity and Antiaromaticity. 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