It has long been thought that the highly conductive complexes formed between elemental iodine and various polycyclic aromatic hydrocarbons are molecular complexes; i.e., they contain iodine as I2. In this contribution we report resonance Raman and iodine-129 Mössbauer spectroscopic characterization of the form of the iodine in the most highly conductive of these materials : “2Perylene•3I2”. We find that “2Perylene•3I2”is not a molecular complex, but rather a partially oxidized, mixed-valence compound, the charge distribution of which can be approximately formulated on the basis of the spectral data as (perylene)+0.4(I3-•2I2)0.4.
ASJC Scopus subject areas
- Colloid and Surface Chemistry