Kinetics and mechanism of the reactions of the superoxide ion in solutions. III. Kinetics and mechanism of the reaction of the superoxide ion with ethyl acetate in dimethylformamide, acetonitrile, and their mixtures

1983 ◽  
Vol 15 (10) ◽  
pp. 1063-1068 ◽  
Author(s):  
I. B. Afanas?ev ◽  
N. S. Kuprianova
1990 ◽  
Vol 55 (8) ◽  
pp. 1984-1990 ◽  
Author(s):  
José M. Hernando ◽  
Olimpio Montero ◽  
Carlos Blanco

The kinetics of the reactions of iron(III) with 6-methyl-2,4-heptanedione and 3,5-heptanedione to form the corresponding monocomplexes have been studied spectrophotometrically in the range 5 °C to 16 °C at I 25 mol l-1 in aqueous solution. In the proposed mechanism for the two complexes, the enol form reacts with the metal ion by parallel acid-independent and inverse-acid paths. The kinetic constants for both pathways have been calculated at five temperatures. Activation parameters have also been calculated. The results are consistent with an associative activation for Fe(H2O)63+ and dissociative activation for Fe(H2O)5(OH)2+. The differences in the results for the complexes of heptanediones studied are interpreted in terms of steric factors.


2001 ◽  
Vol 33 (10) ◽  
pp. 587-599 ◽  
Author(s):  
Yuri Bedjanian ◽  
V�ronique Riffault ◽  
Georges Le Bras

1972 ◽  
Vol 11 (10) ◽  
pp. 2494-2499 ◽  
Author(s):  
Kenneth L. Bridges ◽  
Samir K. Mukherjee ◽  
Gilbert. Gordon

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