Infrared Spectroscopy of the terf-Butyl Cation in the Gas Phase

摘要

Although Steglitz first proposed tertiary alkyl cations as possible reactive intermediates in organic reactions in 1899, the direct spectroscopic observation of the fert-butyl cation (NMR and IR) in superacid media waited until the achievement of Olah et al. in 1963 (initially via the ready loss of CO from t-C_4H_9-CO~+). Carbocations also have been studied extensively in the gas phase by mass spectrometry.