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<p class="Heading" style="text-align: justify;">Kinetics of catalytic activities of micro amount of Ir(III) in oxidation of D(-) Galactose by N-bromosuccinimide in acidic homogeneous medium</p>

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Title Statement <p class="Heading" style="text-align: justify;">Kinetics of catalytic activities of micro amount of Ir(III) in oxidation of D(-) Galactose by N-bromosuccinimide in acidic homogeneous medium</p>
 
Added Entry - Uncontrolled Name Singh, Vinod Kumar; Department of Chemistry, Maharishi University of Information Technology, Lucknow 226 004, Uttar Pradesh, India
Singh, Vineeta ; Department of Chemistry, D.A.V.P.G. College (University of Lucknow), Aishbagh, Lucknow 226 004, Uttar Pradesh, India
Singh, Vaishali ; Department of Chemistry, Maharishi University of Information Technology, Lucknow 226 004, Uttar Pradesh, India
 
Uncontrolled Index Term Acidic kinetics, Ir(III)-catalysis, D(-)Galactose, N-bromosuccinimide, Oxidation
 
Summary, etc. <p class="Default" style="text-align: justify;">It has been investigated how iridium(III) catalyses the oxidation of D(-)Galactose by N-bromosuccinimide (NBS) in an aqueous perchloric acid solution at 308 K. NBS kinetics is first-order, while galactose kinetics is zero-order. As a function of [Ir(III)], the reactions demonstrate first order at lower [Ir(III)] and zero-order behaviour at higher [Ir(III)]. On the rate of oxidation, inverse fractional-order has been reported in [H<sup>+</sup>], [Cl<sup>-</sup>] and [succinimide]. There is no difference in the rate of oxidation with changes in the ionic strength of the medium or with the addition of Hg(OAc)<sub>2</sub> (a Br-ion scavenger). Galactonic acid has been identified as the major oxidation product of the process. It is possible to compute the activation parameters by utilizing the rate constants observed at four distinct temperature levels. For the sake of this research, it is hypothesised that HOBr and [IrCl<sub>5</sub>H<sub>2</sub>O]<sup>2-</sup>are both reactive species oxidants (i.e. NBS) as well as catalysts. It is very probable that the reaction mechanism for the oxidation of galactose by NBS is supported by current kinetic data, reaction stoichiometry, and product analysis.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry (IJC)
2022-04-22 16:13:41
 
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http://op.niscair.res.in/index.php/IJC/article/view/62558
 
Data Source Entry Indian Journal of Chemistry (IJC); ##issue.vol## 61, ##issue.no## 4 (2022): Indian Journal of Chemistry-(IJC)
 
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