A functionalized alkyldiphenylphosphine as an efficient and mild reagent in carbon tetrachloride-promoted substitution reactions: kinetics and mechanism of the reaction in chloroform

1987 ◽  
Vol 52 (22) ◽  
pp. 4999-5003 ◽  
Author(s):  
Susan D. Toto ◽  
Joyce Takahashi Doi
Keyword(s):  
Carbon Tetrachloride ◽  
Kinetics And Mechanism ◽  
Substitution Reactions ◽  
Mechanism Of The Reaction

Kinetics and mechanism of the reaction of iron(III) with 6-methyl-2,4-heptanedione and 3,5-heptanedione

1990 ◽  
Vol 55 (8) ◽  
pp. 1984-1990 ◽  
Author(s):  
José M. Hernando ◽  
Olimpio Montero ◽  
Carlos Blanco
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Activation Parameters ◽  
Enol Form ◽  
Kinetics And Mechanism ◽  
Kinetic Constants ◽  
Steric Factors ◽  
Kinetics Of ◽  
Mechanism Of The Reaction

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.

Kinetics and mechanism of the reaction of OH with ClO

2001 ◽  
Vol 33 (10) ◽  
pp. 587-599 ◽  
Author(s):  
Yuri Bedjanian ◽  
V�ronique Riffault ◽  
Georges Le Bras
Keyword(s):  
Kinetics And Mechanism ◽  
Mechanism Of The Reaction
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