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The electronic and geometrical modification of the\n                    <jats:italic>\u03c0<\/jats:italic>\n                    \u2010conjugated scaffold implemented here impacts the aggregation behavior of the species in solution. It proved successful in generating species with improved Lewis acidity of the phosphorus center that was then leveraged for small\u2010molecule activation. Hydride abstraction from an external substrate involving the hypervalent species is followed by an intriguing P\u2010mediated umpolung from the hydride to a proton and supports the catalytic potential of this class of main\u2010group Lewis acids for organic chemistry. This study is a comprehensive investigation into various methods, including electronic, chemical, geometric modifications (and sometimes combinations of these approaches) to systematically improve the Lewis acidity of neutral and stable main\u2010group Lewis acids with practical value for a range of chemical transformations.\n                  <\/jats:p>","DOI":"10.1002\/chem.202300173","type":"journal-article","created":{"date-parts":[[2023,3,27]],"date-time":"2023-03-27T08:14:53Z","timestamp":1679904893000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Exploring the Lewis Acidity and Reactivity of Neutral Pentacoordinate Dithienophospholes"],"prefix":"10.1002","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9539-2873","authenticated-orcid":false,"given":"Nayanthara","family":"Asok","sequence":"first","affiliation":[{"name":"Department of Chemistry York University  4700 Keele St Toronto ON, M3J 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