Infrared spectroscopic investigations of cationic ethanol, propanol, and butanol

Yoshiyuki Matsuda, Hiroyuki Harigaya, Min Xie, Kaito Takahashi, Asuka Fujii

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Infrared spectroscopy of the alcohol cations of ethanol, propanol, and butanol was performed to investigate their structures and hyperconjugation mechanisms. In the ethanol cation, the C-C bond hyperconjugates with the singly occupied molecular orbital (SOMO) at the oxygen atom, so that the C-C bond weakens and the bond length elongates. Multiple hyperconjugations among SOMO, the C-C bond, and the end C-H bond occur in the propanol cation and enhance the acidity of the C-H bond through the delocalization of its bonding σ electron. The butanol cation forms the oxonium-type structure through the proton transfer from the terminal CH bond.

Original languageEnglish
Pages (from-to)215-218
Number of pages4
JournalChemical Physics Letters
Publication statusPublished - 2015 Nov 1

ASJC Scopus subject areas

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


Dive into the research topics of 'Infrared spectroscopic investigations of cationic ethanol, propanol, and butanol'. Together they form a unique fingerprint.

Cite this