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A structural investigation of the mercury-sulphur interaction
Bibliography: p. 130-136.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Chemistry
2014
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| _version_ | 1867613338822770688 |
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| access_status_str | Open Access |
| author | Dijkstra, Ellemieke |
| author2 | Nassimbeni, Luigi R |
| author_browse | Dijkstra, Ellemieke Nassimbeni, Luigi R |
| author_facet | Nassimbeni, Luigi R Dijkstra, Ellemieke |
| author_sort | Dijkstra, Ellemieke |
| collection | Thesis |
| description | Bibliography: p. 130-136. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/9971 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:34:33.896Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| 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:11427/9971 A structural investigation of the mercury-sulphur interaction Dijkstra, Ellemieke Nassimbeni, Luigi R Chemistry Bibliography: p. 130-136. The crystal and molecular structures of phenyl, 2-mercaptopyrimidine mercury(II) and phenyl,mercaptobenzene mercury(II) have been determined by the methods of X-ray crystallography. The interaction between mercury and sulphur is investigated. This interaction is of interest both biochemically and toxicologically. More specifically, secondary Hg---S interactions are found to mimic that observed in NMR exchange processes, where they undergo a transition state as a four-membered bridging intermediate. Structural correlations between compounds containing at least one mercury - sulphur covalent bond are examined. The coordination geometry about the mercury atom is generally found to be distorted tetrahedra or octahedra, with a very strong tendency to retain the linear character of the R - Hg - S angle. The electronegativity of sulphur is found to be the most influential parameter in determining the coordination geonetry of the mercury atom. The transition from four- to six-coordinated structures is examined but did not reveal unambiguously whether this occurs by an SN3 or (SN2)2 disubstitution process. The four-membered bridging structure formed by secondary Hg---S interactions is investigated to determine whether minimum energy pathways are evident. However, there is no evidence for pathways representing exchange as observed in solution. 2014-12-11T21:00:02Z 2014-12-11T21:00:02Z 1982 Master Thesis Masters MSc http://hdl.handle.net/11427/9971 eng application/pdf Department of Chemistry Faculty of Science University of Cape Town |
| spellingShingle | Chemistry Dijkstra, Ellemieke A structural investigation of the mercury-sulphur interaction |
| thesis_degree_str | Master's |
| title | A structural investigation of the mercury-sulphur interaction |
| title_full | A structural investigation of the mercury-sulphur interaction |
| title_fullStr | A structural investigation of the mercury-sulphur interaction |
| title_full_unstemmed | A structural investigation of the mercury-sulphur interaction |
| title_short | A structural investigation of the mercury-sulphur interaction |
| title_sort | structural investigation of the mercury sulphur interaction |
| topic | Chemistry |
| url | http://hdl.handle.net/11427/9971 |
| work_keys_str_mv | AT dijkstraellemieke astructuralinvestigationofthemercurysulphurinteraction AT dijkstraellemieke structuralinvestigationofthemercurysulphurinteraction |