Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Structure and reactivity of diol host-guest compounds
Includes bibliographical references.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Chemistry
2016
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613190854017024 |
|---|---|
| access_status_str | Open Access |
| author | Harvey, Grant Andrew |
| author2 | Nassimbeni, Luigi R |
| author_browse | Harvey, Grant Andrew Nassimbeni, Luigi R |
| author_facet | Nassimbeni, Luigi R Harvey, Grant Andrew |
| author_sort | Harvey, Grant Andrew |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17286 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:13.078Z |
| 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:11427/17286 Structure and reactivity of diol host-guest compounds Harvey, Grant Andrew Nassimbeni, Luigi R Chemistry Clathrate compounds - Reactivity Clathrate compounds - Structure Includes bibliographical references. The crystal structures of trans-9, 10-dihydroxy-9, 10-diphenyl-9, 10- dihydroanthracene with various guest molecules have been determined by X-ray diffraction. The guests were 2-butanone, 4-vinylpyridine, 4-methylpyridine and 2-methylpyridine. The host to guest ratios were determined by microanalysis and density measurements. The change of the overall host lattice structure upon guest release was studied by X-ray powder diffraction. The thermal characteristics of the compounds were studied using thermogravimetric analysis and differential scanning calorimetry. Guest desorption from three of the four compounds occurred in a single step whereupon the host framework collapsed back to the guest-free structure. The compound containing 4-methylpyridine, released the guest molecules in a two-step process. Evidence of a new host phase was identified from the XRD pattern of this intermediate phase. On further guest release, the intermediate phase converted to the guest-free host structure. In an attempt to reconcile thermodynamics with structure, the correlation between hydrogen bond length and guest desorption enthalpy was investigated. 2016-02-26T07:20:55Z 2016-02-26T07:20:55Z 1990 Master Thesis Masters MSc http://hdl.handle.net/11427/17286 eng application/pdf Department of Chemistry Faculty of Science University of Cape Town |
| spellingShingle | Chemistry Clathrate compounds - Reactivity Clathrate compounds - Structure Harvey, Grant Andrew Structure and reactivity of diol host-guest compounds |
| thesis_degree_str | Master's |
| title | Structure and reactivity of diol host-guest compounds |
| title_full | Structure and reactivity of diol host-guest compounds |
| title_fullStr | Structure and reactivity of diol host-guest compounds |
| title_full_unstemmed | Structure and reactivity of diol host-guest compounds |
| title_short | Structure and reactivity of diol host-guest compounds |
| title_sort | structure and reactivity of diol host guest compounds |
| topic | Chemistry Clathrate compounds - Reactivity Clathrate compounds - Structure |
| url | http://hdl.handle.net/11427/17286 |
| work_keys_str_mv | AT harveygrantandrew structureandreactivityofdiolhostguestcompounds |