A chemical approach towards the spectroscopy of carboxylic acid dimer isomerism
2003 | Zeitschriftenartikel. Eine Publikation mit Affiliation zur Georg-August-Universität Göttingen.
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- Autor(en)
- Emmeluth, C.; Suhm, Martin A.
- Zusammenfassung
- The vibrational dynamics and hydrogen bond topology of excited isomers of carboxylic acid dimers is elucidated by an FTIR study of mixed acetic acid-methyl acetate clusters in supersonic jet expansions. The partial esterification prevents a second OH-O hydrogen bond in the dimer and replaces it by a weak CH-O contact. Vibrational transitions due to mixed acid-ester dimers are observed in the O-H, C=O, and C-O stretching range. Similarities between the mixed dimer spectrum and weak bands in the spectrum of pure acetic acid clusters suggest a common hydrogen bond pattern for both species. It is the hydrogen bond pattern observed between two adjacent monomers in solid acetic acid. The conclusions are supported by quantum-chemical calculations.
- Erscheinungsdatum
- 2003
- Status
- published
- Herausgeber
- Royal Soc Chemistry
- Zeitschrift
- Physical Chemistry Chemical Physics
- Organisation
- Institut für Physikalische Chemie
- ISSN
- 1463-9076