Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC03015G, Communication Lucas C Torres, Casey A Lenart, Avik Bhattacharjee, Michael Seidl, Pawel Löwe, Fabian Dielmann, Christopher Blain Caputo An acyclic alkyl-imino phosphenium cation stabilized by an N-heterocyclic imine (NHI) is reported, revealing how scaffold modification unlocks reactivity inaccessible to classical phosphenium platforms. The cation displays pronounced Lewis acidity,...