text: Electrophilic fluorinating reagents could in principle operate by electron transfer pathways or an S2 attack at fluorine. This distinction has not been decided. By using a charge-spin separated probe, it was possible to show that the electrophilic fluorination of stilbenes with Selectfluor proceeds through an SET/fluorine atom transfer mechanism.
  In certain cases Selectfluor can transfer fluorine to alkyl radicals.