Association structures of N-methylacetamide in solution studied by infrared electroabsorption spectroscopy

Hirotsugu Hiramatsu, Hiro Hamaguchi

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Aggregated structures of N-methylacetamide in 1,4-dioxane solution have been studied using infrared electro-absorption spectroscopy. Predominance of two structures, the monomer and dimer, is demonstrated. For the monomer, angles α between the permanent dipole moment and the transition dipole moments are determined to be 6° ± 9° for the amide A, 0° ± 13° for the amide I, 62° ± 4° for the amide II modes, respectively. For the dimer, the experimental results are explained very well by assuming a head-to-tail structure, which has the permanent dipole moment twice as large as that of the monomer and similar α values as those of the monomer.

Original languageEnglish
Pages (from-to)457-464
Number of pages8
JournalChemical Physics Letters
Volume361
Issue number5-6
DOIs
Publication statusPublished - 2002 Aug 6

ASJC Scopus subject areas

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

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