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Rate constants for reactions of SO 4 ˙− radicals in acetonitrile
Author(s) -
Padmaja S.,
Alfassi Z. B.,
Neta P.,
Huie R. E.
Publication year - 1993
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550250307
Subject(s) - chemistry , reaction rate constant , acetonitrile , aqueous solution , radical , photochemistry , organic chemistry , kinetics , physics , quantum mechanics
Rate constants have been measured for the reactions of the sulfate radical, SO 4 ˙− , with alkanes, alkenes, alcohols, ethers, and amines in 95% acetonitrile solution. The rate constants were in the range of 10 6 L mol −1 s −1 for the abstraction reactions and 10 7 −10 9 L mol −1 s −1 for the addition and electron transfer reactions. These values are 20 to 80 times lower than those measured in aqueous solutions. Furthermore, the rate constants for the reactions of SO 4 ˙− with the primary alcohols increase with the number of carbon atoms and then level off, in contrast to the behavior observed in aqueous solution, where the rate constant increases more sharply for the larger alcohols. © 1993 John Wiley & Sons, Inc.