Browsing Masters Degrees (Chemistry) by Title
Now showing items 186-205 of 255
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Studies towards the synthesis of perhydropyrrolo[2,1-j]quinoline and perhydropyrido[2,1-j]quinoline ascidian alkaloids.
(2002)Cylindricines A-K [1-11], lepadifonnine [12] and fasicularin [13] are tricyclic ascidian alkaloids exhibiting the perhydropyrrolo[2,1 :j]quinoline and perhydropyrido[2,1-j]quinoline ring systems. The structural features ... -
A study of the isomerisation of aconitic acid with reference to sugarcane processing.
(2000)Chromatographic methods were used to determine the absolute values of cis-aconitic acid and trans-aconitic acid present in sugar cane factory processing streams and to determine the rates of isomerisation from the ... -
A study of the photochemical stability of 3'-Azido-3' deoxythymidine in different solvents.
(2016)Abstract available in PDF file. -
A study on the deactivation and reactivation of supported nickel hydrogenation catalysts.
(2017)Abstract available in PDF file. -
A study towards the use of semiconductors as mediators in organic oxidation transformations.
Abstract available in PDF file. -
Studying the evolution of cold gas in galaxies : large absorption line survey with MeerKAT.
(2016)Abstract available in PDF file. -
The substitution behaviour of terpy polyglycoxyl and ruthenium-platinum complexes with biologically significant nucleophiles. A kinetic and mechanistic study.
(2014)The kinetics of two sets of complexes was investigated under pseudo first order conditions using UV-Visible spectrophotometry as a function of concentration and temperature. The first set consisting 4’-substituted terpy ... -
Supercritical fluid extraction and analysis of extracts from selected Meliaceae species.
(1995)The thesis outlines an investigative study of the supercritical fluid extraction (SFE) of organic natural products from two Meliaceae species. Extractions from ground wood, bark and seeds of the selected species were ... -
Supported copper oxide catalysts for octanal hydrogenation : the influence of water.
(2010)Copper oxide supported on alumina (CuO/Al2O3), silica (CuO/SiO2) and chromia (CuO/Cr2O3) have been synthesized and characterized. These catalysts were characterized using XRD, SEM, TEM, ICP, BET surface area and pore ... -
Supported metal oxides on monoliths for paraffin oxidation.
(2015)Abstract available in PDF file. -
A survey of organic pollutants in the South African sewage sludges.
(2006)A comprehensive literature survey looking at different aspects of organic contaminants in sewage sludge is incorporated in the thesis. It is clear from the data available that plants do not take up most of the organic ... -
The synthesis and application of heteroatom boralanes containing nitrogen, oxygen and sulfur.
(2013)There is a constant need for robust and highly reactive hydroborating reagents which will be able to yield stable organoborane compounds upon their hydroboration with olefins. These stable organoborane compounds can be ... -
Synthesis and biological activities of 2-hydroxyphenylacyl azoles and their oxime derivatives.
(2012)Fourteen phenylacyl and 2-hydroxyphenylacyl azoles and their oxime derivatives of which three were new, 2-(2-methyl-1H-imidazol-1-yl)-1-phenylethanone oxime 7; 1-(2- hydroxyphenyl)-2-(2-methyl-1H-imidazol-1-yl)ethanone ... -
Synthesis and biological activity of aloin derivatives.
(2008)This project is focused on the synthesis and biological activity of aloin and derivatives. Aloin is a C-glucoside anthrone that is found in Aloe marlothii, a common Southern African plant used in traditional medicine. ... -
Synthesis and characterisation of gold-based compounds as potential DNA intercalators.
(2016)Abstract available in PDF file. -
Synthesis and characterisation of novel oxovanadium(IV) Schiff base complexes: A study of their electronic spectral properties, peroxide binding affinities, DFT-calculated geometries and spectra, and cytotoxicity towards human carcinoma cells.
(2012)A series of five, tetradentate Schiff-base ligands were synthesised and chelated to vanadyl to form oxovanadium(IV) complexes. The ligands, 4,4’-{benzene-1,2-diylbis[nitrilo(1E)phen-1-yl-1ylidene]}- dibenzene-1,3-diol ... -
Synthesis and characterization of gold (I) complexes of bis(diphenylphosphino)-acetonitrile.
(2010)This study comprised the synthesis and characterization of select phosphine ligands and their complexation to gold(I). An initial approach was the reaction between Ph2PCl in "wet" organic solvent and [ClAu(tht)] (tht = ... -
Synthesis and characterization of iron amine complexes.
(2011)The organometallic Lewis acid [(η5-C5H5)(CO)2Fe]BF4 reacts with excess dry diethyl ether at low temperatures to form the novel labile complex [(η5-C5H5)(CO)2Fe(OEt2)]BF4 which in turn serves as a precursor in the syntheses ... -
Synthesis and characterization of new gold and silver complexes based on P/N and P/S ligands : P/S ligand-stabilized gold nanoparticles.
(2013)This dissertation comprises three distinct studies, two of which concerns molecular inorganic chemistry, and one concerns inorganic materials science. Firstly, the synthesis and characterization of new dithiophosphonate ...