Investigation of Solvent Effects on Carbonyl Stretching Vibrational Frequency of Camphor
| dc.contributor.advisor | Redi, Mesfin (PhD) | |
| dc.contributor.author | Fituma, Abiyot | |
| dc.date.accessioned | 2022-03-11T08:12:17Z | |
| dc.date.accessioned | 2023-11-09T16:18:18Z | |
| dc.date.available | 2022-03-11T08:12:17Z | |
| dc.date.available | 2023-11-09T16:18:18Z | |
| dc.date.issued | 2021-08-30 | |
| dc.description.abstract | Solvent effects on the carbonyl stretching vibrational frequency of Camphor were investigated. The solvents were chosen to cover wide polarity range and include carbon tetrachloride,2-propanol, methanol, and acetonitrile. For protonic and aprotonic solvents two distinct behaviors were observed. In non-protonic or aprotonic solvent there seems little or negligible polarity dependent shift was observed. The situation is different for protonic solvent where strong blue shift was obtained. These facts could be attributed to the low dipole moment of the chromophore (in aprotonic solvents) and hydrogen bonding with solvent molecules. The broadness in protonic solvents compared to that in aprotonic solvents support the suggestion made earlier and indicate the Band I is due to mainly hydrogen bonding. Similarly, the solvent dependence of Band II analyzed. Generally, a bathochromic shift was observed though the peak in acetonitrile appears at higher frequency than both protonic solvents. Additional shoulder peak of absorption was observed in methanol and propanol solvents. What is striking was that the shoulder is approximately same as that found in CCl4 solution. This may be due to complex (hydrogen bonding) between the carbon of carbonyl and oxygen of the alcohols. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/30529 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Camphor | en_US |
| dc.subject | Carbonyl Carbon | en_US |
| dc.subject | Solvent | en_US |
| dc.subject | Hydrogen Bonding | en_US |
| dc.title | Investigation of Solvent Effects on Carbonyl Stretching Vibrational Frequency of Camphor | en_US |
| dc.type | Thesis | en_US |