Thesis (M.S.)--University of Wisconsin--Madison, 1964. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 74-75.

Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 67-68).

Thesis (doctoral)--Umeå University, Sweden, 1995. / Added t.p. with thesis statement inserted. Includes bibliographical references.

Thesis (M.S.)--Villanova University, 2006. / Chemistry Dept. Includes bibliographical references.

Thesis (Ph. D.)--Lehigh University, 2006. / Includes vita. Includes bibliographical references (leaves 139-152).

Hydrogenation and hydrofunctionalisation reactions provide efficient, sustainable methodologies for the manipulation of synthetic handles and the formation of carbon-heteroatom bonds from readily available starting materials. Traditional hydrogenation methods typically require precious or semi-precious transition metal complexes or finely divided powders. Iron-based catalysts offer several advantages over more traditional ‘noble’ metal systems due to the high abundance, long-term availability, low cost and low toxicity of iron. To date, the most powerful iron-catalysed hydrogenation and hydrofunctionalisation reactions have required either highly air-sensitive iron(0) complexes or iron(II) complexes activated with an extremely reactive, pyrophoric organometallic reagent. An operationally simple and environmentally benign formal hydrogenation protocol has been developed using a simple iron(III) salt and NaBH4; an inexpensive, bench stable, stoichiometric reductant. This reaction has been applied to the reduction of terminal alkenes (22 examples, up to 95% yield) and nitro groups (26 examples, up to 95% yield) in ethanol, under ambient conditions (Scheme A1). Two novel series of structurally related alkoxy-tethered N-heterocyclic carbene (NHC) iron(II) complexes have been developed as catalysts for the regioselective hydroboration of alkenes. Significantly, Markovnikov selective alkene hydroboration with pinacolborane (HBpin) has been controllably achieved for the first time using an iron catalyst (11 examples, 35-90% isolated yield) with up to 37:1 branched:linear selectivity (Scheme A2). anti-Markovnikov selective alkene hydroboration was also achieved using catecholborane (HBcat) and modification of the ligand backbone (6 examples, 44-71% yield). In both cases, ligand design has enabled activator-free iron catalysis.

Ochre deposits from sites in England and Wales varied widely in their composition, their appearance, their rate of formation and where they occurred. It was demonstrated that chemical oxidation could account for the precipitation of iron from drainage water. In sterile samples of drainage water from ochreous sites 80% of the total iron in solution was oxidized within 48 hours. It was also shown that autocatalysis of ferrous iron oxidation by ferric precipitates could occur in drainage water. Filamentous bacteria were observed by light microscopy in most samples and were assigned to the genus Leptothrix. Gallionella 'app were observed in some deposits but their distribution was not widespread. Shaerotilus slop_ were not found by light microscopy or isolated in artificial media. The chemolithotroph T.ferrooxidans was found in acidic ochre samples (pH44.0) and in samples from drainage water of near neutral pH suggesting that it can survive in microenvironments of low pH, contributing to ochre formation over a wide range of drainage water pH. Heterctrophic bacteria capable of growing in artificial media of low pH were isolated, primarily from acidic samples, and the results suggested that they were polysacchuride producing. Complex degrading heterotrophic bacteria were also isolated from ochre using a ferric ammonium citrate medium. Some deposits, on the basis of chemistry and microbiology, could be described as either pyritic or filamentous ochre. However, the majority of samples fell between these extremes and had various combinations of filamentous bacteria, Thiobacilli and heterotrophic organisms. 7 A marine antifouling paint containing copper was used to control the growth of sheathed filamentous bacteria in drainage water and other heterotrophic bacteria in artificial media. Since ochre results from the interaction of many factors, chemical and microbial, the use of copper applied as an antifouling paint or incorporated into drainage pipes, must be proved effective and economic in relation to ochre prevention in agricultural drainage systems.

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