518. Kinetic studies of oxidation–reduction of cobalt–ethylenediaminetetra-acetic acid complexes. Part I. The reduction of chloro(ethylenediaminetriacetatoacetic acid)cobaltate(III) and its conjugate base by ferrous ion

1963 ◽  
Vol 0 (0) ◽  
pp. 2798-2801 ◽  
Author(s):  
A. Pidcock ◽  
W. C. E. Higginson
Keyword(s):  
Acetic Acid ◽  
Kinetic Studies ◽  
Ferrous Ion ◽  
Oxidation Reduction ◽  
Conjugate Base

scholarly journals Kinetic Studies of Ferrous Ion Oxidation with Crystalline Human Ferroxidase

1967 ◽  
Vol 242 (11) ◽  
pp. 2653-2657
Author(s):  
Shigemasa Osaki ◽  
Otto Walaas
Keyword(s):  
Kinetic Studies ◽  
Ferrous Ion

Degradation of tetracycline antibiotics: Mechanisms and kinetic studies for advanced oxidation/reduction processes

Chemosphere ◽  
2010 ◽  
Vol 78 (5) ◽  
pp. 533-540 ◽  
Author(s):  
Joonseon Jeong ◽  
Weihua Song ◽  
William J. Cooper ◽  
Jinyoung Jung ◽  
John Greaves
Keyword(s):  
Advanced Oxidation ◽  
Kinetic Studies ◽  
Tetracycline Antibiotics ◽  
Reduction Processes ◽  
Oxidation Reduction

Rate and equilibrium studies of the deprotonation of benzylic ketones bearing pyridinium cations

1989 ◽  
Vol 67 (3) ◽  
pp. 428-432 ◽  
Author(s):  
John W. Bunting ◽  
Dimitrios Stefanidis
Keyword(s):  
Activation Parameters ◽  
Kinetic Studies ◽  
Similar Data ◽  
Equilibrium Studies ◽  
Hydroxide Ion ◽  
Pyridinium Cation ◽  
Carbon Acids ◽  
Entropy Of Activation ◽  
Pyridinium Cations ◽  
Conjugate Base

Rates and equilibria for the deprotonation of four benzylic ketones containing pyridinium substituents (1, 2, 5, and 6) have been investigated in basic aqueous solution (ionic strength 0.1) over the range 15–45 °C, and thermodynamic and activation parameters have been evaluated. Similar data are also reported for the deprotonation of nitroethane. The kinetic preference for hydroxide ion addition to the carbonyl group in competition with the thermodynamically preferred enolate ion formation, which was previously reported for the 1-methyl-4-phenylacetylpyridinium cation (1) and its 3-phenylacetyl isomer (2), is also found for the 1-(1-methyl-2-oxo-2-phenylethyl)pyridinium cation (6). Rates of equilibration of the 1-(2-oxo-2-phenylethyl)-pyridinium cation (5) with its enolate ion conjugate base are too rapid to allow investigation by stopped-flow spectrophotometry. For the hydroxide ion catalyzed deprotonation of each of 1, 2, 6, and nitroethane, [Formula: see text] is more negative than ΔS0. This difference, which represents the entropy of activation for protonation of the conjugate base of each of these carbon acids by water, is approximately constant at [Formula: see text] = −4.9 ± 0.5 cal deg−1 mol−1. Keywords: carbon acids, kinetic studies, deprotonation, activation parameters, pKa values.

scholarly journals Kinetic studies of metalloporphyrin formation. Part I. Mn(II) with hematoporphyrin

1968 ◽  
Vol 46 (22) ◽  
pp. 3431-3436 ◽  
Author(s):  
Doreen A. Brisbin ◽  
Robert J. Balahura
Keyword(s):  
Acetic Acid ◽  
Glacial Acetic Acid ◽  
Kinetic Studies ◽  
Activation Energies ◽  
Kinetics Of

The kinetics of the formation of Mn(III) hematoporphyrin in glacial acetic acid has been studied spectrophotometrically.On addition of Mn(II) to porphyrin in glacial acetic acid a species which appears to be the monocation immediately is formed and is then converted to Mn(III) hematoporphyrin at a rate suitable for kinetic studies.The rates of reaction were measured at 45, 50, and 55 °C and the activation energies were calculated.

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