Lithium-cation and proton affinities of sulfoxides and sulfones: A fourier transform ion cyclotron resonance study

  • Erwin Buncel
  • Michèle Decouzon
  • Alessandra Formento
  • Jean-François GalEmail author
  • Marta Herreros
  • Lewyn Li
  • Pierre-Charles Maria
  • Ilmar Koppel
  • Riho Kurg


The kinetic method was used for the quantitative determination of lithium-cation affinities by Fourier transform ion cyclotron resonance. This method was applied to a series of XYSO and XYSO2 compounds. Proton basicities of the SO and SO2 compounds were also determined. When comparison is made between Li+ basicities and proton basicities, a linear regression encompassing XYSO and XYSO2 families suggests that Li+ may be bonded in a similar way to the SO and SO2 moieties, that is, to only one oxygen on the latter. PM3 calculations support this hypothesis.


Proton Affinity Kinetic Method PhNO2 Proton Basicity HCO2Et 
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Copyright information

© American Society for Mass Spectrometry 1997

Authors and Affiliations

  • Erwin Buncel
    • 1
  • Michèle Decouzon
    • 2
  • Alessandra Formento
    • 2
  • Jean-François Gal
    • 2
    Email author
  • Marta Herreros
    • 2
  • Lewyn Li
    • 2
  • Pierre-Charles Maria
    • 2
  • Ilmar Koppel
    • 3
  • Riho Kurg
    • 3
  1. 1.Department of ChemistryQueen’s UniversityKingstonCanada
  2. 2.Groupe FT-ICR, Laboratoire de Chimie Physique OrganiqueUniversité de Nice-Sophia AntipolisNice Cedex 2France
  3. 3.Institute of Chemical PhysicsTartu UniversityTartuEstonia

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