Inclusion compounds of multipedal hosts

 

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dc.contributor.advisor Bourne, Susan A en_ZA
dc.contributor.advisor Nassimbeni, Luigi R en_ZA
dc.contributor.author Nash, Katherine Lindsay Gifford en_ZA
dc.date.accessioned 2017-11-14T13:59:55Z
dc.date.available 2017-11-14T13:59:55Z
dc.date.issued 1997 en_ZA
dc.identifier.citation Nash, K. 1997. Inclusion compounds of multipedal hosts. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/26237
dc.description.abstract The inclusion properties of three multipedal host compounds have been investigated. The host compounds : hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)benzene (host 1), 1,2,3,5,6, 7-hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)naphthalene (host 2), and tetra(3-hydroxy-3,3-diphenyl-2-propynyl)ethylene (host 3), are characterised by a planar electron-rich central region with bulky substituent groups attached to it. Each substituent contains a hydroxyl group capable of hydrogen bonding. These features enable the inclusion of small organic solvent molecules, with suitable functional groups, within the host framework. The crystal structures of selected inclusion compounds and the a-phases of hosts 1 and 3 are presented. The hydrogen bonding patterns and host-guest interactions are analysed. The packing motif of the host compounds and host conformation within each structure is also discussed. The thermal decomposition behaviour of these compounds was investigated using thermogravimetry and differential scanning calorimetry. The kinetics of desolvation for some of the inclusion compounds was determined using isothermal thermogravimetry. Rate laws describing the desolvation mechanisms are ascribed, and the activation energies determined. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Chemistry en_ZA
dc.title Inclusion compounds of multipedal hosts en_ZA
dc.type Doctoral Thesis
dc.date.updated 2017-03-28T08:55:48Z
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Chemistry en_ZA
dc.type.qualificationlevel Doctoral
dc.type.qualificationname PhD en_ZA
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uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Nash, K. L. G. (1997). <i>Inclusion compounds of multipedal hosts</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Chemistry. Retrieved from http://hdl.handle.net/11427/26237 en_ZA
dc.identifier.chicagocitation Nash, Katherine Lindsay Gifford. <i>"Inclusion compounds of multipedal hosts."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Chemistry, 1997. http://hdl.handle.net/11427/26237 en_ZA
dc.identifier.vancouvercitation Nash KLG. Inclusion compounds of multipedal hosts. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Chemistry, 1997 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/26237 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Nash, Katherine Lindsay Gifford AB - The inclusion properties of three multipedal host compounds have been investigated. The host compounds : hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)benzene (host 1), 1,2,3,5,6, 7-hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)naphthalene (host 2), and tetra(3-hydroxy-3,3-diphenyl-2-propynyl)ethylene (host 3), are characterised by a planar electron-rich central region with bulky substituent groups attached to it. Each substituent contains a hydroxyl group capable of hydrogen bonding. These features enable the inclusion of small organic solvent molecules, with suitable functional groups, within the host framework. The crystal structures of selected inclusion compounds and the a-phases of hosts 1 and 3 are presented. The hydrogen bonding patterns and host-guest interactions are analysed. The packing motif of the host compounds and host conformation within each structure is also discussed. The thermal decomposition behaviour of these compounds was investigated using thermogravimetry and differential scanning calorimetry. The kinetics of desolvation for some of the inclusion compounds was determined using isothermal thermogravimetry. Rate laws describing the desolvation mechanisms are ascribed, and the activation energies determined. DA - 1997 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1997 T1 - Inclusion compounds of multipedal hosts TI - Inclusion compounds of multipedal hosts UR - http://hdl.handle.net/11427/26237 ER - en_ZA


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