Photodissociation spectroscopy of phenol dimer ion. Lack of resonance interaction between the aromatic rings

Kazuhiko Ohashi, Yoshiya Inokuchi, Nobuyuki Nishi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Electronic spectra of a homo-molecular but inequivalent dimer ion, (C6H5OH)+2, are measured by photodissociation spectroscopy. A broad band appeared in the 340-440 nm region is characteristic of the C ← X transition of a phenol ion chromophore, suggesting that the dimer ion consists of a phenol ion and a neutral phenol. No strong band is observed in the 450-1400 nm region, whereas other aromatic dimer ions usually show charge resonance bands in near-infrared region. Owing to the geometrical constraint of an O-H ⋯ O hydrogen bond in (C6H5OH)+2, the two aromatic rings cannot be in a parallel configuration suitable for the resonance interaction.

Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalChemical Physics Letters
Volume257
Issue number1-2
DOIs
Publication statusPublished - Jul 19 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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