Clathration by diol hosts : thermodynamics and structure

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dc.contributor.advisorNassimbeni, Luigi Ren_ZA
dc.contributor.authorBarbour, Leonard Jamesen_ZA
dc.date.accessioned2016-08-22T12:26:10Z
dc.date.available2016-08-22T12:26:10Z
dc.date.issued1994en_ZA
dc.description.abstractInclusion properties of the following seven diol host compounds were investigated: Host 1 9,9'-bis(9,91-dihydroxy-fluorene) Host 2 1, 1'-binaphthyl-2,2'-bis( diphenylhydroxymethyl) Host 3 2,2'-bis(9-hydroxy-9-fluorenyl)biphenyl Host 4 trans-9, 10-dihydroxy-9,10-diphenyl-9, 10-dihydroanthracene Host 5 trans-9, 10-dihydroxy-9,10-di-p-tolyl-9,10-dihydroanthracene Host 6 trans-9, 10-dihydroxy-9, 10-di-p-tert-butylphenyl-9, 10-dihydroanthracene Host 7 trans-9, 10-dihydroxy-9, 10-di-a-naphthyl-9, 10-dihydroanthracene These compounds all possess molecular planes with bulky substituents and opposing hydroxyl moieties as probes for possible coordination to guest molecules by means of hydrogen bonding. Sixteen different inclusion compounds were formed with common organic solvents as the guests. Various characterisation techniques were used and the crystal structures of the inclusion compounds and of the a-phases of Hosts 2 and 5 were elucidated using single crystal X-ray diffraction methods. Thermal decomposition studies using thermogravimetry and differential scanning calorimetry (DSC) were carried out in order to relate the strength of the host-guest interactions to the structures of the inclusion compounds. Owing to practical limitations, the DSC technique is not suitable for the measurement of '1H for the decomposition of an inclusion compound where the guest is relatively volatile. Therefore an apparatus was devised to yield accurate '1H0 values for this process.en_ZA
dc.identifier.apacitationBarbour, L. J. (1994). <i>Clathration by diol hosts : thermodynamics and structure</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Chemistry. Retrieved from http://hdl.handle.net/11427/21427en_ZA
dc.identifier.chicagocitationBarbour, Leonard James. <i>"Clathration by diol hosts : thermodynamics and structure."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Chemistry, 1994. http://hdl.handle.net/11427/21427en_ZA
dc.identifier.citationBarbour, L. 1994. Clathration by diol hosts : thermodynamics and structure. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Barbour, Leonard James AB - Inclusion properties of the following seven diol host compounds were investigated: Host 1 9,9'-bis(9,91-dihydroxy-fluorene) Host 2 1, 1'-binaphthyl-2,2'-bis( diphenylhydroxymethyl) Host 3 2,2'-bis(9-hydroxy-9-fluorenyl)biphenyl Host 4 trans-9, 10-dihydroxy-9,10-diphenyl-9, 10-dihydroanthracene Host 5 trans-9, 10-dihydroxy-9,10-di-p-tolyl-9,10-dihydroanthracene Host 6 trans-9, 10-dihydroxy-9, 10-di-p-tert-butylphenyl-9, 10-dihydroanthracene Host 7 trans-9, 10-dihydroxy-9, 10-di-a-naphthyl-9, 10-dihydroanthracene These compounds all possess molecular planes with bulky substituents and opposing hydroxyl moieties as probes for possible coordination to guest molecules by means of hydrogen bonding. Sixteen different inclusion compounds were formed with common organic solvents as the guests. Various characterisation techniques were used and the crystal structures of the inclusion compounds and of the a-phases of Hosts 2 and 5 were elucidated using single crystal X-ray diffraction methods. Thermal decomposition studies using thermogravimetry and differential scanning calorimetry (DSC) were carried out in order to relate the strength of the host-guest interactions to the structures of the inclusion compounds. Owing to practical limitations, the DSC technique is not suitable for the measurement of '1H for the decomposition of an inclusion compound where the guest is relatively volatile. Therefore an apparatus was devised to yield accurate '1H0 values for this process. DA - 1994 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1994 T1 - Clathration by diol hosts : thermodynamics and structure TI - Clathration by diol hosts : thermodynamics and structure UR - http://hdl.handle.net/11427/21427 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21427
dc.identifier.vancouvercitationBarbour LJ. Clathration by diol hosts : thermodynamics and structure. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Chemistry, 1994 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/21427en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Chemistryen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherChemistryen_ZA
dc.titleClathration by diol hosts : thermodynamics and structureen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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