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Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions
The synthesis of a series of bis-substituted heteroleptic dirhodium(II,II) complexes containing bridging acetate and chelating bipyridyl ligands is herein described. The protons at the 4- and 4'- positions of the bipyridyl ligands on the model complex 1 were substituted by either the electron withdr...
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| Format: | Thesis |
| Language: | English |
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Department of Chemistry
2025
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| _version_ | 1867613141026734080 |
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| access_status_str | Open Access |
| author | de Doncker, Stephen George |
| author2 | Ngubane, Siyabonga |
| author_browse | Ngubane, Siyabonga de Doncker, Stephen George |
| author_facet | Ngubane, Siyabonga de Doncker, Stephen George |
| author_sort | de Doncker, Stephen George |
| collection | Thesis |
| description | The synthesis of a series of bis-substituted heteroleptic dirhodium(II,II) complexes containing bridging acetate and chelating bipyridyl ligands is herein described. The protons at the 4- and 4'- positions of the bipyridyl ligands on the model complex 1 were substituted by either the electron withdrawing CF3 (complex 2) or electron donating OMe (complex 3) groups, to observe the electronic influence on the metal complexes. As such, electroanalysis using cyclic voltammetry indicated variations in the metal-centred redox processes for the title complexes. The complexes obtained were used as pre-catalysts for the hydroformylation and hydroaminomethylation of olefins, an unprecedented homogenous catalysis system. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/40864 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:24.573Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Department of Chemistry |
| publisherStr | Department of Chemistry |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/40864 Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions de Doncker, Stephen George Ngubane, Siyabonga Smith, Gregory S Chemistry The synthesis of a series of bis-substituted heteroleptic dirhodium(II,II) complexes containing bridging acetate and chelating bipyridyl ligands is herein described. The protons at the 4- and 4'- positions of the bipyridyl ligands on the model complex 1 were substituted by either the electron withdrawing CF3 (complex 2) or electron donating OMe (complex 3) groups, to observe the electronic influence on the metal complexes. As such, electroanalysis using cyclic voltammetry indicated variations in the metal-centred redox processes for the title complexes. The complexes obtained were used as pre-catalysts for the hydroformylation and hydroaminomethylation of olefins, an unprecedented homogenous catalysis system. 2025-02-03T06:45:24Z 2025-02-03T06:45:24Z 2024 2025-01-31T12:33:22Z Thesis / Dissertation Doctoral PhD http://hdl.handle.net/11427/40864 eng application/pdf Department of Chemistry Faculty of Science University of Cape Town |
| spellingShingle | Chemistry de Doncker, Stephen George Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions |
| thesis_degree_str | Doctoral |
| title | Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions |
| title_full | Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions |
| title_fullStr | Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions |
| title_full_unstemmed | Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions |
| title_short | Heteroleptic dirhodium (II,II) complexes: synthesis, spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions |
| title_sort | heteroleptic dirhodium ii ii complexes synthesis spectroscopy and applications in hydroformylation and hydroaminomethylation catalytic reactions |
| topic | Chemistry |
| url | http://hdl.handle.net/11427/40864 |
| work_keys_str_mv | AT dedonckerstephengeorge heterolepticdirhodiumiiiicomplexessynthesisspectroscopyandapplicationsinhydroformylationandhydroaminomethylationcatalyticreactions |