dc.contributor.author | Finnestad, Jone | |
dc.date.accessioned | 2022-07-06T06:54:04Z | |
dc.date.issued | 2022-05-31 | |
dc.date.submitted | 2022-07-05T22:01:39Z | |
dc.identifier.uri | https://hdl.handle.net/11250/3003002 | |
dc.description | Postponed access: the file will be accessible after 2025-05-31 | |
dc.description.abstract | New tri- and tetradentate O-functionalized NHC oxo- and imido vanadium complexes have been synthesized and characterized. The complexes were preliminary tested for catalytic activity towards coupling of CO2 and epoxides in the presence of [PPN]Cl (PPN = bis(triphenylphosphoranylidene)ammonium) as co-catalyst. The tridentate oxo-vanadium complexes showed activity, although low, towards selective coupling of cyclohexene oxide (CHO) and CO2 to cyclohexene carbonate (CHC). The imido-vanadium complex had the same activity towards CHO/CO2 coupling as its corresponding oxo-vanadium complex owing to its reactivity towards [2+2] cycloaddition of CO2 to form the oxo-vanadium complex. Tetradentate NHC oxo-vanadium complexes were also tested in coupling of a wider variety of mono and di-substituted epoxides such as CHO, propylene oxide (PO), styrene oxide (SO), cyclopentene oxide (CPO) and 1,3-cyclohexadiene oxide (1,3-CHDO) with CO2 showing activity towards selective formation of cyclic carbonates. | |
dc.language.iso | eng | |
dc.publisher | The University of Bergen | |
dc.rights | Copyright the Author. All rights reserved | |
dc.subject | NHC | |
dc.subject | CO2 | |
dc.subject | Vanadium | |
dc.subject | Metallorganic | |
dc.subject | Catalysis | |
dc.subject | N-Heterocyclic Carbene | |
dc.subject | Epoxide | |
dc.title | Synthesis, Characterization and Catalytic Applications of N-Heterocyclic Carbene Based Vanadium Complexes. | |
dc.type | Master thesis | |
dc.date.updated | 2022-07-05T22:01:39Z | |
dc.rights.holder | Copyright the Author. All rights reserved | |
dc.description.degree | Masteroppgave i kjemi | |
dc.description.localcode | KJEM399 | |
dc.description.localcode | MAMN-KJEM | |
dc.subject.nus | 752299 | |
fs.subjectcode | KJEM399 | |
fs.unitcode | 12-31-0 | |
dc.date.embargoenddate | 2025-05-31 | |