| Autor: |
Stoyanov, ES, Stoyanova, IV, Reed, CA |
| Jazyk: |
angličtina |
| Rok vydání: |
2008 |
| Zdroj: |
Stoyanov, ES; Stoyanova, IV; & Reed, CA. (2008). IR spectroscopic properties of H(MeOH)n+ clusters in the liquid phase: Evidence for a proton wire. Chemistry-A European Journal, 14(12), 3596-3604. doi: 10.1002/chem.200701746. UC Riverside: Retrieved from: http://www.escholarship.org/uc/item/55t6q724 |
| DOI: |
10.1002/chem.200701746. |
| Popis: |
The long-standing problem of understanding the nature of the "excess proton" in acidified water is simplified by studying the proton in methanol. The 3D network of hydrogen bonds in H(aq)+ is reduced to a ID problem. Infrared spectroscopic characterization of linear chain methanol proton solvates in H(CH3OH)n+ for n = 2-8 provides insight into some of the puzzling IR spectral features associated with O-H-O vibrations. These include the virtual disappearance of otherwise strong bands from H-bonded methanol molecules adjacent to symmetrical O-H +-O groups. The data indicate that a chain of up to four O-H⋯-O bonds either side of this group can act as an electrical wire to separate positive charge. This suggests a refinement of the Grotthuss proton-hopping mechanism for explaining the anomalously high mobility of H + in Hbonded media. © 2008 Wiley-VCH Verlag GmbH & Cu. KGaA. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
