- Kinetics of Deuterium Isotope Exchange between 2-Methylpropane-2-thiol and Propane-2-thiol in Aprotic Solvents
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The rate constants for bomolecular deuterium isotope exchange between 2-methylpropane-2-thiol and propane-2-thiol in C6D12, CCl4, (CD3)2CO, HCON(CH3)2, (CD2)4O, and (CH3)2SO solutions were determined by use of 1H n.m.r. analysis.The rate constants, k, and activation enthalpy, ΔH, decrease, and entropy, -ΔS, increases, with an increase in the ability of the solvents to form hydrogen bonds with alkanethiols.The rate constant of concerted hydrogen transfer inside the cyclic dimer of alkanethiols with two H-bonds, k3, increases with increasing dielectric constant of the solvent.
- Wawer, Andrzej
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p. 1295 - 1298
(2007/10/02)
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