The fluoride affinity of SO2

Abstract Energy-resolved collision-induced dissociation (CID) experiments using a flowing afterglow-tandem mass spectrometer (MS) have been performed on SO 2 F − . The results give a 298 K bond enthalpy of D(SO 2 F − )=225±9 kJ mol −1 . G3/B3LYP and G3(MP2) calculations give corresponding values of 215 and 217 kJ mol −1 , in reasonable agreement with the experimental results. The experimental result is 42 kJ mol −1 higher than results previously reported using ion cyclotron resonance (ICR) equilibrium techniques, but is in good agreement with relative values.