Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/5211
Title: | A combined matrix-isolation infrared spectroscopy and MO study of 1-amino-2-propanol | Authors: | Cacela, Constança Fausto, Rui Duarte, Maria Leonor |
Keywords: | 1-Amino-2-propanol; Intra- and intermolecular hydrogen bonding; Infrared and Raman spectra; Matrix-isolation; HF-SCF and MP2 6-31G* ab initio calculations | Issue Date: | 2001 | Citation: | Vibrational Spectroscopy. 26:1 (2001) 113-131 | Abstract: | Vibrational spectra of 1-amino-2-propanol (1AP) isolated in argon and krypton matrices at 14 K and of the pure liquid at room temperature were recorded and interpreted on the basis of ab initio MO calculations undertaken at the HF-SCF and MP2 levels of theory. For the first time, five different conformational states of monomeric 1AP could be experimentally observed and their vibrational signatures obtained. The observed conformers were found to correlate well with the most stable forms predicted by the MP2 calculations, the first and second lowest energy forms corresponding to conformers which exhibit a considerably strong intramolecular OH...N hydrogen bond (gG'g and g'Gg'), while the less abundant forms observed in the matrices (tG't, g'G't and tG'g') are characterized by having a relatively weak intramolecular NH...O bond. These results were reinforced by infrared solution studies of the compound in tetrachloroethylene. The experimental data obtained for the pure liquid, where OH...N intermolecular hydrogen bonding dominates, indicate that the preferred conformation of the monomeric unit within the aggregates is similar to conformer tG't. | URI: | https://hdl.handle.net/10316/5211 | DOI: | 10.1016/S0924-2031(01)00112-6 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
file74144fa35515412592741f4aebe621b2.pdf | 506.33 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
24
checked on Nov 9, 2022
WEB OF SCIENCETM
Citations
23
checked on May 2, 2023
Page view(s) 50
461
checked on Oct 16, 2024
Download(s)
306
checked on Oct 16, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.