Inner Sphere Reduction of Tris(pyridine-2- carboxylato)manganese(III) by Hydroxylammonium Ion in Sodium Picolinate-Picolinic Acid Buffer Media
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Kalyan Kali Sen Gupta
Abstract
The kinetics and mechanism of the oxidation of hydroxylamine by tris(pyridine-2-carboxylato)manganese( III) in Na(pic)-picH [where Na( pic) = sodium salt of pyridine-2-carboxylic acid (picH)] has been studied in the pH range 4.89-6.10. The rate of the reaction increases with increasing [substrate] but with decreasing acidity. A rate expression has been derived from which the dissociation constant of the equilibrium NH3OH+ ⇄ NH2OH + H+ has been computed at different temperatures. Activation parameters for the slow rate determining step have been evaluated. Manganese(III) complex is reduced by the hydroxylammonium ion by an inner sphere mechanism. The reaction appears to proceed through the intermediate formation of free radicals to give products of oxidation.
© 2014 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Hypochlorite Oxidation of a Chromium(III) Schiff Base Complex
- Theoretical Estimates of Association Constants for Contact Triple-Ion Formation
- Inner Sphere Reduction of Tris(pyridine-2- carboxylato)manganese(III) by Hydroxylammonium Ion in Sodium Picolinate-Picolinic Acid Buffer Media
- The Complex Aqueous Chemistry of RUC12(TPPTS)3 and its Reaction with Dihydrogen
- Substitution Reactions of Platinum(II) Dipicolinate Complex with Some Mono- and Bidentate Ligands - Rates and Mechanism
- Kinetics and Mechanism of Oxidation of Azide Ion by 12-Tungstocobaltate(III), [CoW12O40]5-, Ion
- Osmium(VIII) Catalysed Oxidation of Thiocyanate by Periodate in Aqueous Alkaline Medium
- Kinetics and Mechanism of the Reactions of Bis(biguanide)copper(II) Ion with Different Amino Acids in Aqueous Media
- Keywords: Kinetics, copper(II), biguanide, amino acids, associative mechanism
- Aquation and Base Hydrolysis of trans-Tetraammine(methylamine)sulfatocobalt(III) Complex Ion
- Notes for Contributors. Inorganic Reaction Mechanisms
- Instructions for Authors
- Disk Specifications
Artikel in diesem Heft
- Hypochlorite Oxidation of a Chromium(III) Schiff Base Complex
- Theoretical Estimates of Association Constants for Contact Triple-Ion Formation
- Inner Sphere Reduction of Tris(pyridine-2- carboxylato)manganese(III) by Hydroxylammonium Ion in Sodium Picolinate-Picolinic Acid Buffer Media
- The Complex Aqueous Chemistry of RUC12(TPPTS)3 and its Reaction with Dihydrogen
- Substitution Reactions of Platinum(II) Dipicolinate Complex with Some Mono- and Bidentate Ligands - Rates and Mechanism
- Kinetics and Mechanism of Oxidation of Azide Ion by 12-Tungstocobaltate(III), [CoW12O40]5-, Ion
- Osmium(VIII) Catalysed Oxidation of Thiocyanate by Periodate in Aqueous Alkaline Medium
- Kinetics and Mechanism of the Reactions of Bis(biguanide)copper(II) Ion with Different Amino Acids in Aqueous Media
- Keywords: Kinetics, copper(II), biguanide, amino acids, associative mechanism
- Aquation and Base Hydrolysis of trans-Tetraammine(methylamine)sulfatocobalt(III) Complex Ion
- Notes for Contributors. Inorganic Reaction Mechanisms
- Instructions for Authors
- Disk Specifications
