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Kinetic studies and mechanism on the permanganic oxidation of L-Glutamine in strong acid medium in the presence and absence of Silver (I)

✍ Scribed by Hossein Iloukhani; Homayoon Bahrami

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 163 KB
Volume: 31
Category: Article
ISSN: 0538-8066
DOI: 10.1002/(sici)1097-4601(1999)31:2<95::aid-kin3>3.0.co;2-u

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✦ Synopsis

The kinetic study and mechanism of the permanganic oxidation of L-glutamine in sulfuric acid has been carried out both in the absence and presence of silver (I) using a spectrophotometric technique. Activation parameters have been evaluated using the Arrhenius and Eyring plots. Mechanisms consistent with the observed kinetic data have been proposed and discussed. The overall rate expression for the oxidation may be written as

In the presence of silver (I) the rate law is

The reaction appears to involve an acid catalyzed and data showed role of water molecules in the rate-determining step is proton transfer which satisfies Bunnett's theory. A mechanism satisfying the various kinetic parameters has been proposed.

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