Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/18078
Title: | Formic and acetic acids in a nitrogen matrix: Enhanced stability | Authors: | Lopes, Susy Domanskaya, Alexandra V Fausto, Rui Räsänen, Markku Khriachtchev, Leonid |
Issue Date: | Oct-2010 | Publisher: | American Institute of Physics | Serial title, monograph or event: | The Journal of Chemical Physics | Volume: | 133 | Abstract: | Formic acid HCOOH, FA and acetic acid CH3COOH, AA are studied in a nitrogen matrix. The infrared IR spectra of cis and trans conformers of these carboxylic acids and also of the HCOOD isotopologue of FA are reported and analyzed. The higher-energy cis conformer of these molecules is produced by narrowband near-IR excitation of the more stable trans conformer, and the cis-to-trans tunneling decay is evaluated spectroscopically. The tunneling process in both molecules is found to be substantially slower in a nitrogen matrix than in rare-gas matrices, the cis-form decay constants being approximately 55 and 600 times smaller in a nitrogen matrix than in an argon matrix, for FA and AA respectively. The stabilization of the higher-energy cis conformer is discussed in terms of specific interactions with nitrogen molecule binding with the OH group of the carboxylic acid. This model is in agreement with the observed differences in the IR spectra in nitrogen and argon matrices, in particular, the relative frequencies of the OH and COH modes and the relative intensities of the OH and CvO bands | URI: | https://hdl.handle.net/10316/18078 | DOI: | 10.1063/1.3484943 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
J. Chemical Physics, 133 (2010) 144507.pdf | 181.07 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
80
checked on May 1, 2023
WEB OF SCIENCETM
Citations
1
77
checked on May 2, 2023
Page view(s) 50
503
checked on Oct 16, 2024
Download(s) 50
576
checked on Oct 16, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.