Kinetics and mechanism of the reaction between bis 4-(2-pyridylazo)resorcinol ferrate(III) complex and cyanide ion

1988 ◽  
Vol 13 (5) ◽  
pp. 367-370 ◽  
Author(s):  
Nishi Gupta ◽  
Prem C. Nigam
Keyword(s):  
Kinetics And Mechanism ◽  
Cyanide Ion ◽  
Mechanism Of The Reaction

scholarly journals Spectroscopic and Substitution Kinetic Studies of Hexacyanoferrate(II) Complexes byEDTA Catalysed with Mercury(II)

2009 ◽  
Vol 6 (s1) ◽  
pp. S103-S110 ◽  
Author(s):  
K. S. Siddiqi ◽  
Aftab Aslam Parwaz Khan ◽  
Ayaz Mohd ◽  
Shaista Bano
Keyword(s):  
Kinetic Studies ◽  
Ligand Substitution ◽  
Kinetics And Mechanism ◽  
Inexpensive Method ◽  
Cyanide Ion ◽  
Dissociative Mechanism ◽  
Maximum Reaction ◽  
Rate Of Reaction ◽  
Potassium Hydrogen ◽  
Mechanism Of The Reaction

Kinetics and mechanism of substitution of cyanide ion in hexacyanoferrate(II) by EDTA catalysed by mercury(II) has been studied spectrophotometrically at 365 nm in potassium hydrogen phthalate buffer of pH = 5.0 and ionic strength, I = 0.1 M, maintained by (KNO3) at 25 °C. Effect of the pH and concentration of the EDTA, [Fe(CN)4-6] on the rate of reaction has been studied. The kinetics and mechanism of the reaction has been shown through dissociative mechanism. The mechanism of ligand substitution in the complex together with the kinetic data has been shown. The catalytic activity of mercury(II) has also been studied as a function of its concentration. The maximum reaction product was detected at pH = 5 after which a decline in absorption occurs followed by precipitation. It is an inexpensive method to identify and remove the cyanide ion in solution even in very low concentration of the order of 10-4M.

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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