Fig. 4: Reaction and dissociation of sodiated acetone (R1, m/z 81) and sodiated acetone-d6 (R1-d6, m/z 87) in the gas phase.
From: Demethylation C–C coupling reaction facilitated by the repulsive Coulomb force between two cations
a The proposed structures for product ions in the dissociation R1. b The product ions in the tandem mass spectrum of R1. c Tandem mass spectrum of R1 (m/z 81 →m/z 147 →). d The product ions in the tandem mass spectrum of R1-d6. e Tandem mass spectrum of R1-d6 (m/z 87 →m/z 156 →). (Note: Signal-to-noise ratio is significantly greater than 3. RA denotes Relative abundance. R1 refers to gas-phase R1a, R1b ions of m/z 81).
