Legacy Theses
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University of Calgary masters and doctoral theses submitted in paper format prior to the electronic thesis and dissertation program.
University of Calgary graduate alumni can make their thesis publicly available in PRISM by contacting digitalservices@ucalgary.libanswers.com
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Browsing Legacy Theses by Department "Chemistry"
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Item Open Access 1,5 Diphosphadithiatetrazocines: synthesis, isomers, metal complexes and anions(1992) Edwards, Mark; Chivers, TristramItem Open Access 14-electron phosphonium alkylidenes in olefin metathesis: a synthetic and mechanistic study(2006) Romero Guadjardo, Patricio Eduardo; Piers, Warren E.Item Open Access 9-borafluorenes derivatives: chemical reduction and reactivity towards [Cp*A1(I)]4(2002) Romero Guadjardo, Patricio Eduardo; Piers, Warren E.Item Open Access A comparison of natural and synthetic clay minerals in the formation of pillar interlayered clay mineral catalysts(1996) Brandt, Kerstin Barbara; Kydd, Ronald A.Item Open Access A computational study of h2s adsorption on transition and noble metal surfaces(2009) Vartak, Swati; Ziegler, TomItem Open Access A density functional study on four-centre transition states and intermediates in organometallic chemistry(1993) Folga, Elzbieta; Ziegler, TomItem Open Access A kinetic, structural and compositional study of electrochemically formed hydrous ir oxide films(1997) Bock, Christina; Birss, Viola I.Item Open Access A md simulation study of self-assembly in metal-organic framework materials: a proof of principle(2011) Biswal, Debasmita; Kusalik, PeterItem Open Access A molecular modelling study of B-carboline ligands for the benzodiazepine receptor(1996) Spinney, Richard P.; Codding, Penelope W.Item Open Access A new, concise synthesis of the brassinosteroids castasterone and brassinolide(1992) Blazecka, Peter G.; Back, Thomas G.Item Open Access A novel protein footprinting platform: mass spectrometry of laser-initiated carbene reactions(2011) Jumper, Chanelle C.; Schriemer, David C.This work reports a protein labeling method using non-selective carbene reactions of sufficiently high efficiency to permit detection by mass spectrometric methods at the protein, peptide and residue level. The approach uses a diazirine-modified amino acid (L-2-amino-4,4' -azipentanoic acid, "photoleucine") as a label source, which is converted to a highly reactive carbene by pulsed laser photolysis at 355 nm. Labeling of model proteins and peptides was achieved with sensitivity to changes in protein topography brought about by conformational change and ligand binding. Labeling yield is independent of protein concentration over approximately two orders of magnitude, but is weakly dependent on the presence of other chromophores in a photon-limited apparatus. The current configuration required 2 minutes of irradiation for full reagent conversion, however it is shown that comparable yields can be achieved with a single high-energy laser pulse (>100 mJ/pulse, <10 nsec), offering a labeling method with high temporal resolution.Item Open Access A novel route to 4-quinolones and an enantioselective total synthesis of virantmycin(2004) Wulff, Jeremy Earle; Back, Thomas G.Item Open Access A Radiation chemical study of the reduction, oxidation and addition reactions of pterin and its reduced derivatives with free radicals(1987) Farahani, Mohsen; Armstrong, David A.Item Open Access A study of the protective properties of oxide films formed at reactive Al-Cu and Al-Be alloys(2003) Potucek, Rudolf Karel; Birss, Viola I.Two Al alloys of interest to the aerospace industry were studied during this research. AA22 l 9 is an Al/Cu alloy containing about 6%-wt Cu, forming Cu-rich particles in a Cupoor Al-matrix. AlBeMet162 is an Al/Be alloy consisting of ca. 38%-wt Al and 62%-wt Be, forming intermeshed networks of Al and Be. Both alloys do not respond to standard anodization techniques in sulfuric or chromic acid, yielding pitted surfaces and friable anodic coatings. Corrosion protection can be achieved on AA22 l 9 but a significant part of its fatigue strength will be sacrificed as a result of these anodization processes, while no corrosion protection results from the anodization of AlBeMetl 62. Thus, the main goals of this work were preventing the dissolution of the more reactive alloy constituents and electrochemical formation of a passivating surface coating. Cyclic Voltammetry methods (CV) were used as a means of creating barrier and porous oxide layers on AA22 l 9, AlBeMetl 62 and the individual phases making up these alloys. The CV data and measurements of Electrochemical Impedance Spectroscopy (EIS) were used to determine the thickness and dissolution activity of the barrier oxide layers formed. Changes in the barrier oxide thickness during EIS and CV experiments in neutral borate and phosphate buffer as well as H2SO4 and H3PO4 solutions provided a means for predicting whether a stable barrier or porous oxide film would likely be formed in a given electrolyte. This approach was shown to be usable even in the presence of an overlying porous oxide film. The CV data were also examined for an indication of the oxide growth mechanism, with a particular focus on the High Field and Point Defect models, indicating that the High Field Model more closely fits the data acquired. EIS data collected in 5%-wt NaCl solution were shown to give a good indication of the corrosion protection granted by anodic coatings formed on Al alloys and thus to be a suitable method for accelerated corrosion testing. DC anodization at only 2.5 V in neutral buffers and acidic solutions as well as and AC/DC anodization at voltages exceeding 100 V in alkaline silicate solutions were also studied and shown to successfully form anodic oxides without dissolving the reactive constituents of AA22 l 9. Accelerated corrosion testing and microscopic examination of corroded samples suggested that neither of these coatings supplied acceptable corrosion protection, but the silicate coatings appeared very promising, and further optimization of this approach is recommended.Item Open Access A Synthetic approach to phorbol(1984) Swyngedouw, Chris; Bachelor, Frank W.Item Open Access A theoretical investigation of the structure and function of MAO (methylaluminoxane)(2002) Zurek, Eva; Ziegler, TomItem Open Access Item Open Access A theoretical study of ethylene polymerization catalysis incorporating counterion effects(2004) Vanka, Kumar; Ziegler, TomItem Open Access A theoretical study of methane functionalization by homogeneous transition metal catalysts(2003) Hristov, Iordan Hristov; Ziegler, TomItem Open Access A theoretical study on the mechanism of the original shilov reaction(2008) Zhu, Hongjuan; Ziegler, Tom