Abstract: The results of acid-catalyzed reactions and NMR spectroscopic investigations demonstrate the formation from nitroethylene in trifluoromethanesulfonic acid of a novel dication, N, N-dihydroxyiminium-methylium dication, which lacks the stabilization of an adjacent aromatic nucleus. The formation of this simple acyclic dication can be ascribed to an intrinsic stabilization, probably by Y delocalization, owing to the six delocalized ...
