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Kinetics of osmium(VIII) catalysis of periodate oxidation of DMF in aqueous alkaline medium

โœ Scribed by Gangadhar H. Hugar; Sharanappa T. Nandibewoor

Publisher
Springer
Year
1994
Tongue
English
Weight
259 KB
Volume
19
Category
Article
ISSN
0340-4285

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โœฆ Synopsis

The osmium(VIII) catalysed IO2 oxidation of DMF in aqueous alkaline medium follows the rate law:

where K2 is the equilibrium constant of the reaction

K 3 is the formation constant for the complex between DMF and [OsOs(OH)] 3-and k is the decomposition rate constant. The data suggest that the oxidation of DMF proceeds via the formation of a complex between DMF and osmium(VIII) which decomposes slowly, followed by a fast reaction between the reduced osmium(VI) species and IOg. The reaction constants involved in the mechanism are derived.

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