Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Iron Complex"”.
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Macrocyclic chemistry: Part I - Characterization of a mixed-valence di-iron complex and synthesis of a new poly-iron complex. Part II - Synthesis, characterization of new diphosphoester macrocyclic polyethers
… aim, the 1 H NMR spectrum of strongly-coupled di-iron complexes shows 5 different conformations, but is unable to identify these conformers. Calculation using Density Functional Theory (DFT) were performed to attempt to quantify these conformers to correlate with the experimental NMR data. The …
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The synthesis, reactivity and application of functionalized alkyl transition metal complexes
Haloalkyl transition metal complexes can be precursors for a wide range of useful complexes. In Chapter 1, the bromohexyl iron complex, [CpFe(C0)2{(CH2) 0Br}] has been prepared and new information on electrochemical and thermal behaviour of (CpFe(C0)2{(CH2) 6Br}] has been obtained from cyclic …
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Nickel-catalyzed asymmetric arylations of [alpha]-halocarbonyl compounds and studies of boratabenzene-containing transition metal complexes
… of boratabenzene-containing transition-metal complexes. In particular, a new method for preparing complexes bearing a diphenylphosphidoboratabenzene ligand is disclosed, starting from a transition metal-diphenylphosphide and a boracycle, which is an intermediate in the synthetic route …
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Investigation of the supercritical fluid extraction and detection of metals in contaminated soils
… sorbed metals in contaminated soils is explored. Iron containing samples were spiked onto sea sand and extracted with Supercritical Fluid CO₂. On-line detection was accomplished by decompressing the SF-CO₂ and analyte into a microwave induced plasma, whereby the resulting Iron atomic emission …
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Prevention of Iron-Polyphenol Complex Formation in Iron Fortified Tea
The fortification of black tea with iron has the potential to reduce the prevalence of iron deficiency in the developing world. Tea is an ideal vehicle for food fortification because it is centrally processed, is the most consumed beverage globally, aside from water, and is consumed in regular …
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Electrical characterization of large-area donor-acceptor molecular junctions
… The fourth Langmuir-Blodgett film is an iron complex. The large extinction coefficient of the three perylene monolayer films make them visible on the water surface. They are also visible on all three substrates used for characterization. The self-assembled monolayer is a dimethoxybenzene …
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SYNTHESIS OF ALL-CARBON SPIROCYCLES BY INTRAMOLECULAR IRON-MEDIATED DIENE/OLEFIN CYCLOCOUPLING
… triquinane skeleton by a combination of an iron-promoted tandem double ene-type cyclization followed by a ring contraction. The next logical step is to focus on using this methodology on all-carbon systems which will hopefully produce fused five-membered carbocyclic structures. Efforts were …
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Synthesis of diene ligands with H-bonding capabilities for bioimaging applications
… aims to validate the feasibility of tricarbonyl iron complexes and their derivatives in applications as a constituent part of IR/fluorescent bioprobes. Infrared spectroscopy has significant potential in studying these carbonylmetal-based bioprobes, as the MCO signals fall in a window in the water …
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Flavin-dependent Enzymes in Natural Product Biosynthesis
… enzyme is essential in acinetobactin mediated iron assimilation and is important for virulence. The characterization of the binding and reduction of acinetobactin-ferric iron complex revealed that BauF is specific for this substrate and does not utilize NAD(P)H as an electron donor. The unique …
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Small molecule activation and reduction using non-heme iron complexes
… stabilizing reactive species, such as a terminal iron(III)-oxo species. Using this ligand framework, our lab previously reported the syntheses of a series of metal complexes featuring pseudohalide ligands. In each of these complexes, hydrogen bonding interactions between the bound substrate and …
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Metal complexes of non-heme ligands: biological applications
… chymotrypsin and 20S proteasome) by non–heme iron complexes, and glutathionylation of non–heme cobalt complexes mimicking the N5 coordination environment like that of biologically important cofactor cobalamin or B<sub>12</sub> (Cbl) are reported. Different non–heme ligand sets or inhibitors …
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Leveraging the Photochemistry of N-Nitrosamines for Their Aqueous Detection, and Development of a Novel Hemi-Iptycene for Porous Polymers
… for their widespread occurrence in the human environment. Consequently, the development of methods for their detection is an active area of research. Chapter 1 provides an introduction to the structure, reactivity, and synthetic applications of N-nitrosamines with an emphasis on alkyl …
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Biogenesis of iron-sulfur clusters and intracellular iron metabolism
Iron-sulfur ([Fe-S]) clusters represent one of natures most diverse and ubiquitous protein prosthetic groups. [Fe-S] proteins are integral for diverse biological processes. Reconstitution of apo-proteins can occur by exogenously adding excess iron and sulfide. However, due to the toxicity of iron …
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Synthesis and Reactivity of Phosphorus-Containing Heterocycles and Tetrahedranes
… of the the corresponding nickel dichloride complex shows the rigid, bowl-shaped cavity of (PhPA)₂. Tri-tert-butylphosphatetrahedrane (ᵗBuC)₃P was prepared via the dehydrohalogenation of fluorophosphine (ᵗBuC)₃P(F)H. The phosphatetrahedrane core was confirmed spectroscopically and by X-ray …
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X-ray Spectroscopic Studies of Model Compounds With Relevance to Nickel Superoxide Dismutase, Nitrile Hydratase and Copper Related Neurodegenerative Disorders
… investigated to determine Cu coordination environments. The Aβ peptide forms oligomers that coordinate to Cu to produce a highly O<sub>2</sub> reactive Cu<super>I</super> center. This is very interesting due to the fact that Aβ monomers coordinate to Cu to form a neuroprotective …
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Mono- and Dinuclear Nonheme Iron Model Complexes: O-O Bond Activation, Structural Characterization and Reactivity Study
… and reactivities of mono- and dinuclear nonheme iron model complexes were investigated. In Chapters 2 and 3, O-O bond activation of H2O2 by the dinuclear complexes [(FeIII2(μ-O)(μ-OH)L2]3+ (1A) and [(FeIII2(μ-OH)2L2]4+ (2A), L = tris(3,5-di-methyl-4-methoxypyridyl-2-methyl)amine, to form the …
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Synthesis of Macrocyclic Polyamines and their Cu, Fe, Mn and Zn Complexes Targeting HIV (AIDS).
… HIV by different mechanisms. The manganese complex of pyridine-fused macrocyclic polyamine (M40401) has been found to reduce HIV-1 induced apoptosis of astroglial cells. Based on these findings, seventeen new compounds were designed and synthesized, including five macrocyclic polyamines …
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Tripodal Inorganic 2-Pyridyl-phosphine Ligands and Unsymmetrical Analogues: Towards New Applications in Catalysis
… studies of P(6-R-2-py)3 (R = H, Me) to iron(II). Whereas P(2-py)3 readily forms the cationic sandwich complex [{P(2-py)3}2Fe]2+, P(6-Me-2-py)3 forms only half-sandwich complexes of the type [{P(6-Me-2-py)3}FeX2] (X = Cl, OTf). In addition to C3-symmetric ligands, a range of unsymmetrical …
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Micro- and nanostructured materials via ultrasonic spray pyrolysis
… has been put on the use of facile and environmental benign synthetic approaches to produce structured materials in a controllable manner. As a simple and industrially scalable technique, ultrasonic spray pyrolysis (USP) is a powerful synthetic tool especially for application-based …
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Reactions of S-nitrosothiols with biomimetic iron complexes and other transition metals
… synthases (NOS), NADH, and 02. NOS enzymes have ironporphyrin and biopterin cofactors that catalyze this conversion. S-nitrosothiols form in biology as NO-transport mechanisms, post-translational modifications, or as a cellular protectant against overexposure to NO. Heme and non-heme iron …
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