Across the five pyridine bases explored spanning a range of 42 p ka units a linear free energy relationship was found for the proton transfer rate constant with a slope of 032 these findings highlight the influence that proton transfer driving force exerts on pcet reaction kinetics. A proton coupled electron transfer pcet is a chemical reaction that involves the transfer of electrons and protons the term was originally coined for single proton single electron processes that are concerted but the definition has relaxed to include many related processes. Basic to the understanding of proton transfer reactions and kinetics in water is an understanding of the molecular nature of water itself both experimental and theoretical research on water has recently been intense and as a result of those activities a reasonably complete picture has begun to emerge stillinger 1975 1977. The kinetics of proton transfer reactions have been studied using a number of methods by eigen et al1 and by ertl and gerischer 2 and this communication reports the application of yet another. Influence of proton acceptors on the proton coupled electron transfer reaction kinetics of a ruthenium tyrosine complex j christian lennox and jillian l dempsey department of chemistry university of north carolina chapel hill nc 275993290 correspondence to dempseyjemailuncedu table of contents
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