2019-06-20
Observation of Distinct Carboxylic Acid Conformers in Aqueous Solution
Publication
Publication
J. Phys. Chem. Lett. , Volume 10 - Issue 12 p. 3217- 3222
We investigate the molecular geometry of the carboxyl group of formic acid in acetonitrile and aqueous solutions at room temperature with two-dimensional infrared spectroscopy (2D-IR). We found that the carboxyl group adopts two distinct configurations: a configuration in which the carbonyl group is oriented anti-parallel to the hydroxyl (anti-conformer), and a configuration in which the carbonyl group is oriented at an angle of ~60° with respect to the hydroxyl (syn-conformer). These results constitute the first experimental evidence that carboxyl groups exist as two distinct and long-living conformational isomers in aqueous solution at room temperature.
| Additional Metadata | |
|---|---|
| ACS | |
| The Netherlands Organisation for Scientific Research (NWO) , European Research Council (ERC) | |
| doi.org/10.1021/acs.jpclett.9b00915 | |
| J. Phys. Chem. Lett. | |
| Organisation | Ultrafast Spectroscopy |
|
Giubertoni, G., Sofronov, O., & Bakker, H. (2019). Observation of Distinct Carboxylic Acid Conformers in Aqueous Solution. J. Phys. Chem. Lett., 10(12), 3217–3222. doi:10.1021/acs.jpclett.9b00915 |
|
| Additional Files | |
|---|---|
| 16526M_H.Bakker.pdf Author Manuscript , 505kb | |
| 16526ESI.pdf Author Manuscript , 634kb | |