Concerted Proton-electron Transfer Reactions of Ruthenium and Cobalt Complexes: Studies on Distance Dependence and Spin Effects PDF Download
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Languages : en
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Concerted proton-electron transfer reactions of ruthenium and cobalt complexes: Studies on distance dependence and spin effects.
Author:
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Category :
Languages : en
Pages :
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Book Description
Concerted proton-electron transfer reactions of ruthenium and cobalt complexes: Studies on distance dependence and spin effects.
Author: Sebastiao Formosinho
Publisher: Royal Society of Chemistry
ISBN: 1849733163
Category : Science
Languages : en
Pages : 169
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Book Description
Proton-coupled electron transfer (PCET) is emerging as an important new class of reactions and, over the past decade, great strides have been made in our understanding of them. PCET reactions are studied in many branches of chemistry and are omnipresent in biological processes. This book covers recent developments from both the theoretical and experimental points of view. It concentrates on the importance of PCET in biological systems and for bioenergetic conversion. The oxidation of water in Photosystem II to produce oxygen, and the reduction of protons to hydrogen by hydrogenase, for energy storage gets particular emphasis. Chemical reactivity is currently explained in terms of several scientific principles. One of them is the bond-breaking-bond-forming process and is conceptually based on potential energy surfaces. Another incorporates the role of Franck-Condon factors resulting from the overlap of vibrational wavefunctions. A third, the so-called solvent reorganization, involves solvent configuration around a charged species. PCET brings together such concepts and links them to quantum mechanical tunnelling of the electron particle. This book uses personal accounts of experimental examples to provide additional insight on this important topic. It starts by presenting a general overview of the main theoretical approaches and experimental applications. The chapters then go on to cover topics including: the application of the Marcus Cross Relation; the solvation of ionic systems; experimental approaches in biological redox systems; metal ion-coupled electron transfer, and electrochemical concerted proton-electron transfers.
Author: Jessica M. Wittman
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
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Book Description
Proton-coupled electron transfer (PCET) events are essential to the function of many processes. In many cases, long-range electron transfers (ET) are coupled to short-range proton transfer (PT) events. Ruthenium bipyridine complexes with a distant carboxylic acid have been synthesized and characterized to study the effect of varying distances between the PT and ET sites on PCET reactions. In reactions with hydrogen atom acceptors, an electron is transferred from the ruthenium center while proton transfer occurs at the distant carboxylic acid. A phenyl spacer can be incorporated into the bipyridine ligand to provide further separation between the ET and PT sites. The results of kinetic experiments allow analysis of the effects of the distance between ET and PT sites on the PCET reactions.
Author: Helen Cleary Stynes
Publisher:
ISBN:
Category : Chemical reactions
Languages : en
Pages :
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Author: Susan Kathryn Seidel Zawacky
Publisher:
ISBN:
Category : Cobalt compounds
Languages : en
Pages : 310
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Author: Steven John Skoog
Publisher:
ISBN:
Category :
Languages : en
Pages : 468
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Author: Yan Chen
Publisher:
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Category : Chemical kinetics
Languages : en
Pages : 208
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Author: Jeffrey Allan Stritar
Publisher:
ISBN:
Category : Ruthenium
Languages : en
Pages : 248
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Author: Daniel Arlen Geselowitz
Publisher:
ISBN:
Category : Chemical kinetics
Languages : en
Pages : 322
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Author:
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Category :
Languages : en
Pages :
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