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Studies on the effect of the cation nature on the kinetics of the isotopic exchange reaction between chloride ion and O,O-diphenylphosphorochloridothionate in acetonitrile

✍ Scribed by W. Reimschüssel; S. Tilk; M. Mikołajczyk; H. Ślebocka-tilk

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
383 KB
Volume
13
Category
Article
ISSN
0538-8066

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✦ Synopsis

Rate constants and activation parameters for the isotopic exchange reactions between (Ph0)2PSCl and M:Wl (M = MedN+, Et4N+, n-BudN+, Et,,HN+, EtH:,N+, Li+) in acetonitrile were measured in order to find the effect of the cation nature on the kinetics of the reaction. T h e rate constants measured for a range of concentrations of Et:3HN:36Cl, EtH:,N:36Cl, and Li3%1 were analyzed using the Acree equation. T h e equivalent conductance of LiCl in acetonitrile was determined. The nature of the cation has no effect on the mechanism of the reaction. The cation changes only the experimental rate constant proportionally to the dissociation degree of the salt. Smaller values of the rate constant and smaller activation parameters AH* and AS* for the reaction with Li:'Tl indicate the existence of the intermolecular interaction between lithium ions and 0 , O -diphenylphosphorochloridothionate.

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