Torsional isomers in methylated aminoethanols - A jet-FT-IR study
2004 | journal article. A publication with affiliation to the University of Göttingen.
Jump to: Cite & Linked | Documents & Media | Details | Version history
Documents & Media
Details
- Authors
- Liu, Y. Q.; Rice, Corey A.; Suhm, Martin A.
- Abstract
- Jet-FT-IR spectra of aminoethanol (AE), N-methylaminoethanol (MAE), and N,N-dimethylaminoethanol (DMAE) are presented and compared to gas-phase and matrix isolation IR, microwave, and quantum chemical data. The intramolecular O-H...N hydrogen bond gives rise to characteristically shifted O-H stretching bands and torsional difference bands in the monomer spectra. It stabilizes one out of 14 diastereomeric monomer conformations of AE and DMAE and two out of 27 diastereomeric MAE conformations. The latter two correspond to torsional or N-inversional isomers, the interconversion of which is hindered by the intramolecular hydrogen bond. Their energy difference is found to be <1.2 kJ/mol. The intermolecular aggregation patterns of the three aminoethanols are quite distinct and non-monotonic, as suggested by their O-H stretching fingerprints.
- Issue Date
- 2004
- Status
- published
- Publisher
- Natl Research Council Canada
- Journal
- Canadian Journal of Chemistry
- Organization
- Institut für Physikalische Chemie
- ISSN
- 0008-4042
- eISSN
- 1480-3291
- Language
- English