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The synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium
We have reviewed the synthesis and properties of ethylene-bridged dinuclear transition metal complexes. The ethylene-bridged ruthenium complex [CpRu(CO)₂]₂[μ-(CH₂CH₂)] has been prepared. The characterization data (IR, ¹H and ¹³C NMR, and Mass spectral) and properties of this complex are discussed. T...
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| Format: | Thesis |
| Language: | English |
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Department of Chemistry
2016
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| _version_ | 1867613280420233216 |
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| access_status_str | Open Access |
| author | Gafoor, Mansoor Ahmed |
| author2 | Moss, John R |
| author_browse | Gafoor, Mansoor Ahmed Moss, John R |
| author_facet | Moss, John R Gafoor, Mansoor Ahmed |
| author_sort | Gafoor, Mansoor Ahmed |
| collection | Thesis |
| description | We have reviewed the synthesis and properties of ethylene-bridged dinuclear transition metal complexes. The ethylene-bridged ruthenium complex [CpRu(CO)₂]₂[μ-(CH₂CH₂)] has been prepared. The characterization data (IR, ¹H and ¹³C NMR, and Mass spectral) and properties of this complex are discussed. The crystal structure of this complex has also been determined. The reactivity of this complex with donor ligands (CO, PMe₂Ph and PPh₃), protic acids (CF₃COOH and HCl), bromine, MeOH and with oxidants (Ph₃CPF₆ and AgBF₄) has been investigated. The new ruthenium complexes [{CpRu(CO)₂}₂{μ-(CnH₂n₋₁)}]PF₆ (n = 3 or 5), as well as their known iron analogues have been prepared. The crystal structures of [{CpM(CO)₂}₂{μ-(C₃H₅)}]PF₆ (M = Fe or Ru) have been determined. The fluxional behaviour of the complex [{CpRu(CO)₂}₂{μ-(C₃H₅)}]PF₆ has also been determined and discussed in comparison with the analogous iron complexes. A sequence of reactions of [CpM(CO)₂]₂[μ-(CH₂)₅] (M = Fe or Ru) with Ph₃CPF₆, CF₃COOH and NaI has been shown to give high yields of 1-pentene; the relevance of this reaction sequence is discussed. The synthesis and properties of the known ruthenium ethyl complex [CpRu(CO)₂(CH₂CH₃)] are compared with [CpRu(CO)₂]₂[μ-(CH₂CH₂)]. The synthesis, characterization and properties of the ruthenium haloalkyl complexes [CpRu(CO)₂{(CH₂)nX}] (n = 3, X= Cl, Br or I; n = 4 or 5, X= Br or I) are also described. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/18335 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:37.862Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| 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:11427/18335 The synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium Gafoor, Mansoor Ahmed Moss, John R Chemistry We have reviewed the synthesis and properties of ethylene-bridged dinuclear transition metal complexes. The ethylene-bridged ruthenium complex [CpRu(CO)₂]₂[μ-(CH₂CH₂)] has been prepared. The characterization data (IR, ¹H and ¹³C NMR, and Mass spectral) and properties of this complex are discussed. The crystal structure of this complex has also been determined. The reactivity of this complex with donor ligands (CO, PMe₂Ph and PPh₃), protic acids (CF₃COOH and HCl), bromine, MeOH and with oxidants (Ph₃CPF₆ and AgBF₄) has been investigated. The new ruthenium complexes [{CpRu(CO)₂}₂{μ-(CnH₂n₋₁)}]PF₆ (n = 3 or 5), as well as their known iron analogues have been prepared. The crystal structures of [{CpM(CO)₂}₂{μ-(C₃H₅)}]PF₆ (M = Fe or Ru) have been determined. The fluxional behaviour of the complex [{CpRu(CO)₂}₂{μ-(C₃H₅)}]PF₆ has also been determined and discussed in comparison with the analogous iron complexes. A sequence of reactions of [CpM(CO)₂]₂[μ-(CH₂)₅] (M = Fe or Ru) with Ph₃CPF₆, CF₃COOH and NaI has been shown to give high yields of 1-pentene; the relevance of this reaction sequence is discussed. The synthesis and properties of the known ruthenium ethyl complex [CpRu(CO)₂(CH₂CH₃)] are compared with [CpRu(CO)₂]₂[μ-(CH₂CH₂)]. The synthesis, characterization and properties of the ruthenium haloalkyl complexes [CpRu(CO)₂{(CH₂)nX}] (n = 3, X= Cl, Br or I; n = 4 or 5, X= Br or I) are also described. 2016-03-28T14:43:57Z 2016-03-28T14:43:57Z 1991 Master Thesis Masters MSc http://hdl.handle.net/11427/18335 eng application/pdf Department of Chemistry Faculty of Science University of Cape Town |
| spellingShingle | Chemistry Gafoor, Mansoor Ahmed The synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium |
| thesis_degree_str | Master's |
| title | The synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium |
| title_full | The synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium |
| title_fullStr | The synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium |
| title_full_unstemmed | The synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium |
| title_short | The synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium |
| title_sort | synthesis and reactivity of some hydrocarbyl complexes of iron and ruthenium |
| topic | Chemistry |
| url | http://hdl.handle.net/11427/18335 |
| work_keys_str_mv | AT gafoormansoorahmed thesynthesisandreactivityofsomehydrocarbylcomplexesofironandruthenium AT gafoormansoorahmed synthesisandreactivityofsomehydrocarbylcomplexesofironandruthenium |