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The autoprotonation in reduction mechanism of pesticide ioxynil

  1. 1.
    SYSNO ASEP0348590
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleThe autoprotonation in reduction mechanism of pesticide ioxynil
    Author(s) Sokolová, Romana (UFCH-W) RID, ORCID, SAI
    Hromadová, Magdaléna (UFCH-W) RID, ORCID, SAI
    Ludvík, Jiří (UFCH-W) RID, ORCID
    Pospíšil, Lubomír (UFCH-W) RID, ORCID
    Giannarelli, S. (IT)
    Source TitleElectrochimica acta. - : Elsevier - ISSN 0013-4686
    Roč. 55, č. 27 (2010), s. 8336-8340
    Number of pages5 s.
    Languageeng - English
    CountryGB - United Kingdom
    Keywordsautoprotonation ; organic halides ; polarography
    Subject RIVCG - Electrochemistry
    R&D ProjectsGA203/09/1607 GA ČR - Czech Science Foundation (CSF)
    GA203/08/1157 GA ČR - Czech Science Foundation (CSF)
    LC510 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    OC 140 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    CEZAV0Z40400503 - UFCH-W (2005-2011)
    UT WOS000284434700080
    DOI10.1016/j.electacta.2010.01.094
    AnnotationThe reduction mechanism of ioxynil (3,5-diiodo-4-hydroxy-benzonitrile) was studied in dimethylsulfoxide using the electrochemical methods (tast polarography, cyclic voltammetry and controlled potential electrolysis) combined with GC/MS identification of products. The reduction is accompanied by the cleavage of iodide yielding 3-iodo-4-hydroxybenzonitrile. Surprisingly, this process requires only one electron for the exhaustive electrolysis of the starting compound. We showed that the apparent one electron reduction observed in the aprotic solvent is due to the autoprotonation by another molecule of ioxynil. The overall one electron reduction (uptake of two electrons per two molecules of ioxynil) is changed in the presence of a strong proton donor to a two electron process per one molecule.
    WorkplaceJ. Heyrovsky Institute of Physical Chemistry
    ContactMichaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
    Year of Publishing2011
Number of the records: 1  

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