Metal Ion Catalyzed Oxidation of L-Lysine by Alkaline Permanganate Ion-A Kinetic and Mechanistic Approach

Mohanty, Bijaylaxmi; Behera, J. N.; Acharya, Sanjeev; Mohanty, P.; Patnaik, Ajaya Kumar

doi:10.7598/cst2013.282

Cited by 9 publications

(8 citation statements)

References 8 publications

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“…This is similar to the stoichiometry in the reaction of lysine with diperiodatoargentate(III) Hosamani and Nandibewoor (2009). Other researchers however reported a mole ratio 1:2 lysine: permanganate (Harihar et al, 2000), Lysine: hexacyanoferrate(III) (Goel and Shama, 2010), lysine:permanganate (Mohanty et al, 2013).…”

Section: Resultssupporting

confidence: 73%

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The Kinetics of the Oxidation of Lysine by μ-Peroxo-Bridged Binuclear Cobalt (III) Complex of Succinimide in Aqueous Hydrochloric Acid Medium

Adetoro

Idris

Onu

et al. 2017

Annals of Science and Technology

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Kinetics of oxidation of Lysine (Lys) and mechanisms by μ-peroxo bis[bis(ethylenediamine)succinimidato-dicobalt(III)]dinitratedihydrate; [LCo(μ-O2)CoL](NO3)2.2H2O (L = suc(en)2), hereafter the complex, was investigated at 420 nm wavelength of maximum absorption of the complex under the conditions hydrogen ions concentration = 1.8 × 10−2 mol dm−3, temperature = 24 ± 1 °C, [LCo(μ-O2)CoL2+] = 1.4 × 10−4 mol dm−3 and ionic strength = 0.5 mol dm−3. First order in [LCo(μ-O2)CoL2+] and [Lys] were obtained but inverse first order in [H+]. The proposed overall rate equation is as shown:$$Rate = ({{k_1 } \over {k_2 }} + {{K_1 k_3 } \over {k_4 }}{1 \over {[H^ + ]}})[LCo(\mu O_2 )CoL^{2 + } ][Lys]$$Rate of the reaction decreases when hydrogen ions concentration increase and exhibited converse effect with increase in concentration of ionic strength from 0.1 – 1.3 mol dm−3. Added cations and anions affected the reaction rate and the Michaelis-Menten plot passed through the origin indicating no absence of intermediate complex in the electron transfer processes. Putting all the results obtained together, the most probable reaction mechanism is in favour of outer-sphere and an appropriate rate law is established using steady state approximation.

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Section: Resultssupporting

confidence: 73%

“…Also the redox reaction of lysine with diperiodatoargentate(III) (Hosamani and Nandibewoor, (2009), hexacyanoferrate ions and potassium permanganate in alkaline medium have been reported Mohanty et al, (2013). The importance of oxidation of α-amino acids from chemical point of view is on its mechanism of metabolism (Devra, 2005).…”

Section: Introductionmentioning

confidence: 99%

The Kinetics of the Oxidation of Lysine by μ-Peroxo-Bridged Binuclear Cobalt (III) Complex of Succinimide in Aqueous Hydrochloric Acid Medium

Adetoro

Idris

Onu

et al. 2017

Annals of Science and Technology

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“…A free radical scavenging experiment revealed such a possibility. This type of radical intermediate has also been observed in earlier work on the alkaline permanganate oxidation of amino acid [33]. In agreement with the experimental results obtained, a mechanism as in Scheme-I may be envisaged.…”

Section: Mechanismsupporting

confidence: 80%

Study of Nickel (II) Catalysed Oxidation of Glycylglycine by Heptavalent Manganese: A Kinetic Study

Sanjana¹,

Patnaik²,

Mohanty³

et al. 2016

IOSR

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“…Permanganate ion is an efficient oxidant in acid, neutral and alkaline media [15][16][17][18][19][20][21][22][23][24][25][26][27][28] which still remains as one of the most important, eco-friendly and powerful multi-electron oxidants employed in the kinetic studies [29]. The mechanism of oxidation by this multivalent oxidant depends not only on the substrate but also on the medium used for the study.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Mechanism of Electron Transfer to Manganese(VII) by Fluorene and Its Halogenated Derivatives in Neutral Organic Medium

Fawzy¹,

Jassas²,

Ahmed³

et al. 2016

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The kinetics of oxidation of fluorene (Fl) and its halogenated derivatives, namely, 2,7-dichlorofluorene (Fl-Cl), 2,7-dibromofluorene (Fl-Br) and 2,7-diiodofluorene (Fl-I), by permanganate ion in neutral organic medium in the presence of phosphate buffer solution has been investigated at a constant temperature of 25°C. The progresses of the reactions were followed spectrophotometrically. The stoichiometry of the reactions was found to be 3:4 (fluorene: permanganate). The oxidation reactions exhibited a first order dependence in [permanganate] and less than unit order dependences with respect to fluorenes concentrations. Under comparable experimental conditions, the order of the oxidation rate of the fluorene derivatives was: Fl-Cl > Fl > Fl-I > Fl-Br. The final oxidation products of fluorene derivatives were identified by GC/MS, FT-IR and chemical tools as the corresponding ketones (9H-fluorenone derivatives). The proposed oxidation mechanism involves formation of 1:1 intermediate complexes between fluorene derivatives and permanganate ion in pre-equilibrium step. The ratelaw expression was deduced. The reactions constants involved in the different steps of the mechanism were evaluated. The activation parameters associated with the second order rate constants were calculated and discussed.

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Metal Ion Catalyzed Oxidation of L-Lysine by Alkaline Permanganate Ion-A Kinetic and Mechanistic Approach

Cited by 9 publications

References 8 publications

The Kinetics of the Oxidation of Lysine by μ-Peroxo-Bridged Binuclear Cobalt (III) Complex of Succinimide in Aqueous Hydrochloric Acid Medium

The Kinetics of the Oxidation of Lysine by μ-Peroxo-Bridged Binuclear Cobalt (III) Complex of Succinimide in Aqueous Hydrochloric Acid Medium

Study of Nickel (II) Catalysed Oxidation of Glycylglycine by Heptavalent Manganese: A Kinetic Study

Kinetics and Mechanism of Electron Transfer to Manganese(VII) by Fluorene and Its Halogenated Derivatives in Neutral Organic Medium

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