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Keywords:

  • halides;
  • IR spectroscopy;
  • SN2 reactions;
  • solvent effects
Thumbnail image of graphical abstract

Water gets in the way: Hydrated I(CH3I) complexes, I(CH3I)(H2O)1–3, are investigated by IR photodissociation spectroscopy to examine the stable structures of the intermediates of the I+CH3I[RIGHTWARDS ARROW]ICH3+I SN2 reaction under hydrated conditions. The structures and the energetics of the complexes suggest that just one or two H2O molecules will effectively inhibit this SN2 reaction.