Crystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligands

dc.contributor.authorHulett, Leslie Grahamen_ZA
dc.date.accessioned2016-03-14T07:24:53Z
dc.date.available2016-03-14T07:24:53Z
dc.date.issued1972en_ZA
dc.description.abstractPrevious work on crystal field aspects of the vibrational spectra of metal β-ketoenolates has been extended here to metal tropolonate complexes. The crystal field trends have been used to assist in the assignment of metal sensitive vibrations to the transition metal tropolonate complexes. A study has been made of the effects of spin state and Jahn-Teller distortion on the vibrational spectra of the metal tropolonates. Of particular interest is the octahedral divalent metal tropolonate adducts, where the distortion of the copper complex is small, and the metal 2-thiotroponates where the Jahn-Teller- distortion is absent. The spectra of the lanthanide tropolonates are of interest, as a plot of the metal sensitive vibrations show the 'double-humped' curve indicating that crystal field effects are present in the lanthanide ions. This has not previously been shown. Further, from the vibrational spectra of the various lanthanide tropolonates, various conclusions are made regarding structure. The non-transition metal tropolonates provide a system devoid of crystal field effects and afford the opportunity to investigate the influence of other factors on the vibrational spectra. Of interest is the strong influence of the ionic radius and ionization potential on the metal sensitive vibrations and the remarkably small influence of the mass of the metal ion on these vibrations. Although the vibrational spectra of complexes of ethylenediamine and N- substituted ethylenediamines were studied, difficulty with, assignment of the metal sensitive vibrations and the complicating influence of substituents on the spectra, prevents any observations made, from being conclusive.en_ZA
dc.identifier.apacitationHulett, L. G. (1972). <i>Crystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligands</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Chemistry. Retrieved from http://hdl.handle.net/11427/17732en_ZA
dc.identifier.chicagocitationHulett, Leslie Graham. <i>"Crystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligands."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Chemistry, 1972. http://hdl.handle.net/11427/17732en_ZA
dc.identifier.citationHulett, L. 1972. Crystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligands. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Hulett, Leslie Graham AB - Previous work on crystal field aspects of the vibrational spectra of metal β-ketoenolates has been extended here to metal tropolonate complexes. The crystal field trends have been used to assist in the assignment of metal sensitive vibrations to the transition metal tropolonate complexes. A study has been made of the effects of spin state and Jahn-Teller distortion on the vibrational spectra of the metal tropolonates. Of particular interest is the octahedral divalent metal tropolonate adducts, where the distortion of the copper complex is small, and the metal 2-thiotroponates where the Jahn-Teller- distortion is absent. The spectra of the lanthanide tropolonates are of interest, as a plot of the metal sensitive vibrations show the 'double-humped' curve indicating that crystal field effects are present in the lanthanide ions. This has not previously been shown. Further, from the vibrational spectra of the various lanthanide tropolonates, various conclusions are made regarding structure. The non-transition metal tropolonates provide a system devoid of crystal field effects and afford the opportunity to investigate the influence of other factors on the vibrational spectra. Of interest is the strong influence of the ionic radius and ionization potential on the metal sensitive vibrations and the remarkably small influence of the mass of the metal ion on these vibrations. Although the vibrational spectra of complexes of ethylenediamine and N- substituted ethylenediamines were studied, difficulty with, assignment of the metal sensitive vibrations and the complicating influence of substituents on the spectra, prevents any observations made, from being conclusive. DA - 1972 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1972 T1 - Crystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligands TI - Crystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligands UR - http://hdl.handle.net/11427/17732 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/17732
dc.identifier.vancouvercitationHulett LG. Crystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligands. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Chemistry, 1972 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17732en_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.subject.otherMetal ionsen_ZA
dc.titleCrystal field aspects of the vibrational spectra of some metal complexes of tropolone and nitrogen donor ligandsen_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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