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Kinetics of the reactions of singlet molecular oxygen (O21Δg) with organic compounds in the gas phase

✍ Scribed by Robert E. Huie; John T. Herron

Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
662 KB
Volume
5
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

The reactions of singlet molecular oxygen (O~2~^1^Δ~g~) with a series of organic compounds have been studied in the gas phase at 298°K. The concentration of singlet molecular oxygen was determined by titration with 2,5‐dimethylfuran. The titration technique was checked using a photoionization technique. Absolute rate constants were measured on the basis of the loss of organic reactant and, in some cases, of singlet molecular oxygen. It was found that the usual method of producing singlet molecular oxygen in the gas phase can also, under some conditions, allow reactive species other than singlet molecular oxygen to enter the reactor, leading to serious errors in the determination of rate constants. This problem was eliminated by carrying out the rate measurements in the presence of a small amount of nitrogen dioxide a radical scavenger.

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