Kinetics and mechanism of the ruthenium(III) chloride catalyzed oxidation of butan-2-ol and methyl-1-propanol by the hexacyanoferrate(III) ion in an aqueous alkaline medium
About: This article is published in The Journal of Physical Chemistry.The article was published on 1977-06-01. It has received 41 citations till now. The article focuses on the topics: Ruthenium(III) chloride & Aqueous solution.
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TL;DR: In this paper, Strontium(II)-added ZnAl 2 O 4 nanomaterials with spinel structure were prepared by modified sol-gel method using ethylenediamine followed by sintering at 900°C.
66 citations
TL;DR: Detailed mechanistic interpretation and the related kinetic modelling have been worked out for each catalyst and it was found that the catalysed reaction rates are 7- to 24-fold faster.
66 citations
TL;DR: In this paper, the kinetics of the oxidation of ruthenium(III)- and osmium(VIII)-catalysed oxidation of paracetamol by diperiodatoargentate(III) (DPA) in aqueous alkaline medium at a constant ionic strength of 0.10 −3 was studied spectrophotometrically.
Abstract: The kinetics of the oxidation of ruthenium(III)- and osmium(VIII)-catalysed oxidation of paracetamol by diperiodatoargentate(III) (DPA) in aqueous alkaline medium at a constant ionic strength of 0.10 mol dm −3 was studied spectrophotometrically. The reaction between DPA and paracetamol in alkaline medium exhibits 2:1 stoichiometry in both catalysed reactions (DPA:PAM). The main products were identified by spot test, IR, NMR and GC–MS. Probable mechanisms are proposed and discussed. The activation parameters with respect to the slow step of the mechanism are computed and discussed and thermodynamic quantities are also calculated. It has been observed that the catalytic efficiency for the present reaction is in the order of Os(VIII) > Ru(III). The active species of catalyst and oxidant have been identified.
43 citations
TL;DR: In this article, the authors studied the first-order reaction in [DPC] in the presence of ruthenium(III) and proposed a plausible mechanism involving the active species of oxidant and catalyst.
Abstract: The oxidation of a neuroleptic drug gabapentin (GP) by a new oxidant diperiodatocuprate(III) (DPC) has been studied in an aqueous alkaline medium. A minute amount (10−7 mol dm−3) of ruthenium(III) is sufficient to catalyse the reaction. The reaction is first order in [DPC] in the presence of ruthenium(III). The order in [GP] is less than unity, whereas that in [Ru(III)] is unity. Increase in [OH−] accelerates the reaction rate. A plausible mechanism involving the active species of oxidant and catalyst is proposed. The reaction constants in the mechanism have been evaluated.
32 citations
TL;DR: The kinetics of the RuIII-catalysed oxidation of L-leucine and L-isoleucine by alkaline permanganate were studied and compared, spectrophotometrically using a rapid kinetic accessory.
Abstract: The kinetics of the chromium(III) catalysed oxidation of l -leucine and l -isoleucine by alkaline permanganate were studied and compared, spectrophotometrically. The reaction is first order with respect to (oxidant) and (catalyst) with an apparently less than unit order in (substrate) and zero order with respect to (alkali). The results suggest the formation of a complex between the amino acid and the hydroxylated species of chromium(III). The complex reacts further with the permanganate in a rate-determining step, resulting in the formation of a free radical, which again reacts with the permanganate in a subsequent fast step to yield the products. The reaction constants involved in the mechanism were obtained. There is a good agreement between observed and calculated rate constants under different experimental conditions. The activation parameters with respect to slow step of the mechanism for both the amino acids were calculated and discussed. Of the two amino acids, leucine is oxidised at a faster rate than the isoleucine.
28 citations