Dubale, Alemayehu (2010) Synthesis and Characterization of Ionic Liquids Based on O-Phenanthroline. Masters thesis, Addis Ababa University.
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Abstract
Ionic liquids are organic salts with melting point below 1000C. Their unique properties such as negligible vapor pressure, wide ectrochemical window and solvent properties have brought about an amazing interest in these salts. One of the most common research areas based on ionic liquids as a solvent focuses on homogeneous catalysis since ionic liquids are found to be ideal immobilizing agents for various classical transition metal catalyst precursors. In the present study we have tried to synthesize new ionic liquids based on phenanthroline taking in to account that it could easily dissolve transition metal catalysts based on phenanthroline due to similar structure it possesses. In the present work, new and monoalkylated salts based on phenanthroline, have been synthesized and investigated. An attempt to dialkylate this salts failed due steric and electronic factors. These Salts were characterized by various physical and spectroscopic techniques: 1 HNMR, 13C NMR and elemental analysis their melting point, conductivity, miscibility with water and organic solvents were determined. The influence of alkyl substituent along with nature of the anion on the NMR chemical shift of the neighboring hydrogens is also discussed. These compounds were also analyzed by melting point and factors such as size of the anion, delocalization of the charge interaction between the ions and disorder(asymmetry) in the cation affected the packing of the ionic liquid and thereby the observed melting point.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | ionic liquids 1, 10-phenanthroline, quaternization, homogeneous catalysis. |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 26 Jun 2018 12:08 |
| Last Modified: | 26 Jun 2018 12:08 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/4605 |
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