Notes - Kinetics of Reaction of Acyl Chlorides. III. Hydrolysis of Phosphinyl Chlorides.

1956 ◽  
Vol 21 (2) ◽  
pp. 248-249 ◽  
Author(s):  
H. K. Hall, Jr.

1974 ◽  
Vol 163 (1) ◽  
pp. 400-403 ◽  
Author(s):  
Stanley Stein ◽  
Peter Böhlen ◽  
Sidney Udenfriend


1967 ◽  
Vol 45 (14) ◽  
pp. 1619-1629 ◽  
Author(s):  
A. Queen

The activation parameters ΔH≠, ΔS≠, and ΔCP≠ for the hydrolyses of a series of alkyl chloroformates and dimethylcarbamyl chloride in water have been determined. The results indicate that, with increasing electron donation to the chlorocarbonyl group, the mechanism changes from bimolecular to unimolecular (SN1) displacement at this position. For isopropyl chloroformate, some concurrent alkyl–oxygen bond fission is also indicated. The bimolecular mechanism involves reversible addition of water to the carbonyl group followed by ionization of the carbon–chlorine bond.



1990 ◽  
Vol 68 (2) ◽  
pp. 307-313 ◽  
Author(s):  
Denise Matte ◽  
Bernard Solastiouk ◽  
André Merlin ◽  
Xavier Deglise

A complete kinetic study of the N-chlorination, in basic aqueous medium, of cyanuric acid by the stopflow spectrophotometric method is presented. Our experimental results can be interpreted by two pairs of kinetically indistinguishable mechanisms.[Formula: see text]or[Formula: see text]and[Formula: see text]or[Formula: see text]The rate constants and their corresponding activation energies were determined in the limiting case where one of the elementary steps in each pair is involved alone in the kinetics of reaction.[Formula: see text]The rate constants for hydrolysis of the monochlorinated cyanuric acid derivatives were derived from our experimental values. Keywords: kinetics, N-chlorination, 1,3,5-triazine-2,4,6-trione, aqueous medium, stopped flow.







1980 ◽  
Vol 45 (11) ◽  
pp. 2873-2882
Author(s):  
Vladislav Holba ◽  
Ján Benko

The kinetics of alkaline hydrolysis of succinic acid monomethyl and monopropyl esters were studied in mixed aqueous-nonaqueous media at various temperatures and ionic strengths. The results of measurements are discussed in terms of electrostatic and specific interactions between the reactants and other components of the reaction mixture. The kinetic parameters in the media under study are related to the influence of the cosolvent on the solvation sphere of the reactants.



1987 ◽  
Vol 52 (10) ◽  
pp. 2375-2382 ◽  
Author(s):  
Ľubica Adamčíková ◽  
Peter Ševčík

Glycerol causes chemical oscillations in Belousov-Zhabotinskii reaction in a closed system as well as in a reaction solution bubbled with nitrogen. Since the oxidation of glycerol with bromate ions does not proceed autocatalytically and bromine in the oxidation state 0 or +1 in the absence of light does not react with glycerol, hydrolysis of bromine is the probable source of bromide ions in the studied oscillation system.



1981 ◽  
Vol 46 (5) ◽  
pp. 1229-1236 ◽  
Author(s):  
Jan Balej ◽  
Milada Thumová

The rate of hydrolysis of S2O82- ions in acidic medium to peroxomonosulphuric acid was measured at 20 and 30 °C. The composition of the starting solution corresponded to the anolyte flowing out from an electrolyser for production of this acid or its ammonium salt at various degrees of conversion and starting molar ratios of sulphuric acid to ammonium sulphate. The measured data served to calculate the rate constants at both temperatures on the basis of the earlier proposed mechanism of the hydrolysis, and their dependence on the ionic strength was studied.



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