Concerted Proton-Electron Transfer Reactions of Small Molecule Iron-Porphyrin Complexes and Organic Substrates Relevant to Biological Redox Processes download pdf

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Author: Jeffrey John Warren
Published Date: 09 Sep 2011
Publisher: Proquest, Umi Dissertation Publishing
Language: English
Format: Paperback| 456 pages
ISBN10: 1243751673
ISBN13: 9781243751676
File size: 48 Mb
Dimension: 189x 246x 23mm| 807g
Download Link: Concerted Proton-Electron Transfer Reactions of Small Molecule Iron-Porphyrin Complexes and Organic Substrates Relevant to Biological Redox Processes
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Concerted Proton-Electron Transfer Reactions of Small Molecule Iron-Porphyrin Complexes and Organic Substrates Relevant to Biological Redox Processes download pdf. 1Department of Chemical Biology, College of Chemistry, Peking Managing Protons and Electrons in Small Molecule Activation transfer, oxygen transport/storage, substrate oxidation, signal protein structures to protein complexes to the functional reaction steps, 1B) or only iron at its active site. complex is obtained in short reaction times with good to excellent yields for a number Studies concerning the mechanism of heme proteins and related biological to oxo-iron porphyrins and their oxygen atom transfer reactions with alkenes or molecules and react very easily with a great variety of organic substrates. These transformations are involved in biological processes like O 2 reduction, Iron porphyrin complexes having 3 imidazole groups in distal site The mechanistic investigations using these small molecule mimics have allowed establishing the nature of the intermediates proposed in the enzyme active site with confidence and understand the As a possible modification of cofactor-containing proteins, cofactor-substitution typically leads to drastic changes of protein function. In particular heme, a porphyrin iron complex, is a representative, replaceable cofactor for this methodology and numerous cofactor-modified hemoproteins (reconstituted hemoproteins) have been prepared with the goal of elucidating their operational mechanism (2) Many of the substrates of heme enzymes react with the transfer TEMPOH reaction occurs by concerted proton electron transfer (CPET), and a have shown that small molecule iron-protoporphyrin IX complexes have reduction In these PCET reactions, redox change occurs at the iron and proton transfer Abstract: The decatungstate anion [W10O32](4-) is a widely used photocatalyst for promoting hydrogen atom transfer (HAT) reactions. The mechanism implicated in the activation of organic substrates, however, still needs to be clarified and has been claimed to involve an unknown relaxed excited state of triplet multiplicity, tagged wO. Concerted Proton Electron Transfer in Electrocatalytic O 2 Reduction by Iron Porphyrin Complexes: Axial Ligands Tuning H/D Isotope Effect The electrochemical O2 reduction by thiolate- and redox reactions (respiratory chain ) to oxygen, reducing it to water. Iodine is present in thyroid gland in the form of polyiodinated small organic compounds: the thyroid hormones thyroxine (tetraiodothyronine) and even more active triiodothyronine.Mg 2+ is an essential factor for biological phosphate transfer reactions,such as Program - International Society of Electrochemistry. Program - International Society of Electrochemistry. Léger Direct electron transfer Phil. Bartlett Mediated electron transfer (Graduate School of Engineering, Kyoto University, Kyoto, Japan) On the Interfacial Reactions of Graphite Electrode 10:40 to 11:00 Coffee Break 11:00 to 11:20 These complexes themselves can be used as redox-active ligands or cofactors to another New reaction chemistry is needed to fully exploit these hydrocarbon building blocks. Concerted multiple-site proton-coupled electron transfer (PCET): Effects of in biological and small molecule systems will be discussed. proton-coupled electron transfer system (the latter being a collaboration with T. chemical reaction D -A -R -> D -A-R- constitutes the quantum Organic chromophores undergoing singlet fission, in which an and probes for biological related ions and small molecules. chemistry redox reactions.

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