skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

Kinetics and Mechanism of Oxidation of 2-Mercaptoethanol by the Heteropolyoxovanadate [MnV13O38]7

International journal of chemical kinetics, 2015-01, Vol.47 (1), p.13-18 [Peer Reviewed Journal]

2014 Wiley Periodicals, Inc. ;ISSN: 0538-8066 ;EISSN: 1097-4601 ;DOI: 10.1002/kin.20887 ;CODEN: IJCKBO

Full text available

Citations Cited by
  • Title:
    Kinetics and Mechanism of Oxidation of 2-Mercaptoethanol by the Heteropolyoxovanadate [MnV13O38]7
  • Author: CHAKRABARTY, SANCHITA ; BANERJEE, RUPENDRANATH
  • Subjects: Oxidation
  • Is Part Of: International journal of chemical kinetics, 2015-01, Vol.47 (1), p.13-18
  • Description: ABSTRACT In aqueous acetate buffer (pH 3.25–4.30) 2‐mercaptoethanol is oxidized to 2‐hydroxyethyldisulfide by 13‐vanadomanganate(IV) (1). Each mole of 1 consumes 15 mol of 2‐mercaptoethanol, and in this process all of their VVO6 units (in total 13 in number) are reduced to VO2+ in a multistep process. In the first step, 1 is converted to a one‐electron–reduced product (2), comparable to heteropolyblue. Its kinetics has been measured for the first time. The extra electron in 2 is most possibly trapped (in electron paramagnetic resonance spectroscopic timescale) on the 13th vanadium atom, which shares one oxygen with the central MnIV atom in 1. Complex 2 being metastable in the studied pH range decompose further into smaller oligomers, which are further reduced to free vanadyl ions. We found that in the presence of ≥10 fold [2‐mercaptoethanol] over [1], the kinetics of the first step is first order with respect to [1], [2‐mercaptoethanol], and [H+]. Monoprotonated 1 seems kinetically more active than 1. A plausible mechanism has been suggested.
  • Publisher: Hoboken: Blackwell Publishing Ltd
  • Language: English;French;German
  • Identifier: ISSN: 0538-8066
    EISSN: 1097-4601
    DOI: 10.1002/kin.20887
    CODEN: IJCKBO
  • Source: Alma/SFX Local Collection
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait