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Showing 1 to 15 of 15 for “"Oxidation potentials"”.
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Electrochemical and photoelectrochemical oxidation of selected organic compounds on TiO2 electrodes and the effect of adsorption on the oxidation potentials
… SnO$\sb2$ conducting glass electrodes. The oxidation potentials of Resorcinol (RSRCL), 4-Chlororesorcinol (4-CR), 4,6-Dichlororesorcinol (4,6-DCR), Catechol (CC), 3,4-Dihydroxybenzoic acid (3,4-DHBA), and 1,2,4-benzenetriol (1,2,4-THB) in 0.5M KCl were measured. The effect of adsorption on …
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Electrochemical oxidation of aliphatic carboxylates: Kinetics, thermodynamics, and evidence for a shift from a concerted to a stepwise mechanism in the presence of water
The mechanism and the oxidation potential of the dissociative single electron transfer for tetra-n-butylammonium acetate has been investigated via conventional (cyclic voltammetry) and convolution voltammetry. The oxidation potential for tetra-n-butylammonium acetate was determined to be 0.60 ± …
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Exploring Molecular Systems From Chemical Physics To Biochemistry Using Classical And Quantum Mechanics
… acid dissociation constants and solution phase oxidation potentials of canonical nucleic acid residues in addition to intermediates and products of guanine oxidation. Using implicit solvent modeling and accounting for relevant tautomers and protonation states present in aqueous solution, the …
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The <em>In Vitro</em> Cellular Uptake and Physiochemical Properties of Tocotrienols.
… ethanol solution, each tocotrienol has a higher oxidation potential than its corresponding tocopherol. The oxidation potentials of vitamin E are in the order ofα-form < γform < δ-form. The theoretical calculations show that the side chains of tocotrienols are less ordered than those of …
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Electrochemical behaviour of some organometallic compounds containing iron and molybdenum
… suggest similar behaviour after the initial oxidation. The oxidation potentials showed no linear correlation with the corresponding lengths of the alkyl chain, but could, however, be interpreted with the available Tolman's χ-values. The subsequent CO insertion reaction to give an acyl species …
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Electrochemisty, Spectroelectrochemistry And/Or Electrosynthesis of Pi-Extended Porphyrins in Nonaqueous Media
… naphthalene fused porphyrin after a two-electron oxidation, independent of the metal oxidation state, metal coordination number or solvent. The electron abstraction site of the second oxidation was shown to be dependent on the porphyrin central metal ion and the naphthalene oxidation potentials.
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A Polarographic Study of Zinc(II)-Glycine Interactions
… and Richter; methods based on Beer’s Law; oxidation potentials, described by Riley and Gallafent; and polarographic measurements, described by Lingane. | The formation constants of zinc(II)-glycine complexes have not been determined by the polarographic method, but have been determined from …
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Synthesis and properties of some doped lithium transition-metal phosphates
… owing to electrolyte instability at the high oxidation potentials (>5V) required for full charge. LiNiPO₄ could not be charged at all to accessible voltages. Ti doped Li₃Fe₂(PO₄)₃ had a relatively low discharge capacity of 60 mAh/g. Li₃V₂(PO₄)₃ and Ti doped Li₃V₂(PO₄)₃ showed a discharge …
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Oxidation of aqueous sulfides in the presence of manganese dioxide
A comparison of the oxidation potentials indicates that manganese dioxide is thermodynamically capable of oxidizing aqueous solutions cf hydrogen sulfide. A three part study was undertaken to: 1) determine the kinetics of the oxidation both in the presence and absence of oxygen, 2) measure the end …
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Characterizing methanogen and methanotroph diversity, abundance and activity within the Hampshire-Avon catchment
… gas and research into its production and oxidation by microbial communities is crucial in predicting their impact in future climate change. Here, potential rate measurements, quantitative real-time polymerase chain reactions (Q-PCR) of pmoA, mcrA genes and next generation sequencing, were …
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Towards Combined Computational and Experimental Studies on Toxicity of Silver Nanoparticles
… that the presence of Ag+ results in partial oxidation of both the phospholipid heads. Our preliminary experimental and computational studies lead us to develop new computational methods that can accurately predict oxidation potentials (HOMO), reduction potentials (LUMO), and absorption …
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Synthesis, Characterization, and Mixed-Valence Studies of Conformationally Constrained Bisferrocenyl Complexes for the Study of Through-Space S***π; Interactions
… one electron redox processes. The initial oxidation shows a 62 mV negative shift compared to the sulfide analog 2,6-bis(ferrocenyl)thioanisole, and an increased peak separation for the oxidations of 160 mV. No peak separation is observed in the extended sulfoxide system. No intervalence …
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Synthesis of redox-active ligands and their use in hydrogenase modeling
… of current model systems for H2 generation and oxidation derived from H2ase model systems. In Chapter 2, synthetic considerations are taken into account for the design of redox-active ligands. The beauty of the Fc core lies in both its stability and ease of functionalization. Synthetic routes to …
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The Isolation and Electrochemical Studies of Flavanoids from Galenia africana and Elytropapus rhinocerotis from the North Western Cape
In this study two medicinal plant species, namely Galenia africana and Elytropapus rhinocerotis, the former belonging to the family Aizoceae and the latter belonging to the family Asteraceae, have been investigated and different compounds isolated and characterized. Both species are important …