Stable γ-Distonic Oxonium Ions: RO+HCHR'C.H2CHR'' and Their Characteristic Reaction

Article abstract of DOI:10.1002/oms.1210251007

The γ-distonic radical ions RO⁺HCHR'CH2C^.HR'' and their molecular ion counterparts RO^+.CHR'CH2CH2R'' have been studied by isotopic labelling and collision-induced dissociation, applying a potential to the collision cell in order to seperate activated from spontaneous decompositions.The stability of CH2O⁺HCH(CH3)CH2C^.HCH3, C2H5O⁺HCH(CH3)CH2C^.HCH3, CH3O⁺HCH(CH3)CH2C^.H2, CH3O⁺HCH2CH2C^.HCH3 and C2H5O⁺HCH2CH2C^.HCH3, has been demonstrated and their characteristic decomposition, alcohol loss, identified.For all these γ-distonic ions, the 1,4-H abstraction leading to their molecular ion counterpart exhibits a primary isotope effect.