Observation of an aromatic radical anion dimer: (C(sub 10)F(sub 8))(sub 2)(sm bullet)(sub (minus))

摘要

Radical cation dimers are observed for many alkenes and aromatic hydrocarbons as products of the reaction between monomer radical cation and neutral molecule. In most cases, the dimer radical anions, formed via reaction of the monomer radical anion with a neutral molecule, have not been observed. Here we report the observation of the dimer radical anion of octafluoronaphthalene, formed by reaction of C(sub 10)F(sub 8)(sup (center dot)(minus)) with the neutral parent molecules in nonpolar solvents following pulse radiolysis. Both monomer and dimer ions have been characterized by EPR spectra obtained by the time-resolved fluorescence-detected magnetic resonance.