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Reduction of substituted benzonitrile pesticides

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F08%3A00312176" target="_blank" >RIV/61388963:_____/08:00312176 - isvavai.cz</a>

  • Alternative codes found

    RIV/61388955:_____/08:00312176

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Reduction of substituted benzonitrile pesticides

  • Original language description

    The reduction mechanism of ioxynil (3,5-diiodo-4-hydroxy-benzonitrile), bromoxynil (3,5-dibromo-4-hydroxybenzonitrile) and chloroxynil (3,5-dichloro-4-hydroxybenzonitrile) was studied in dimethylsulfoxide by the electrochemical methods combined with FTIRspectroelectrochemical and GC/MS identification of the products. Cyclic voltammetry at different scan rates and at various concentrations of pesticides is consistent with the radical anion formation followed by the subsequent chemical reactions. The main decomposition pathway includes the cleavage of the halogen atom and the dimerization of the dehalogenated intermediate. The differences in the mechanism of ioxynil, bromoxynil and chloroxynil are caused by the mutual differences in the rates of the bond cleavage and the dimerization process.

  • Czech name

    Redukce substituovaných benzonitrilových pesticidů

  • Czech description

    Byl studován redukční mechanismus ioxynilu (3,5-diiodo-4-hydroxybenzonitril), bromoxynilu (3,5-dibromo-4-hydroxybenzonitril) a chloroxynilu (3,5-dichloro-4-hydroxybenzonitril) v prostředí dimethylsulfoxidu. Elektrochemické metody byly doplněny identifikací produktů pomocí FTIR spektroelektrochemie a GC/MS. Charakter cyklické voltametrie při různých rychlostech polarizace a různých koncentracích pesticidů odpovídá mechanismu tvorby radikálanionu s následnými chemickými reakcemi. Při rozkladu dochází k odštěpení atomu halogenu a k dimerizaci dehalogenovaného meziproduktu. Rozdíl v redukčním mechanismu ioxynilu, bromoxynilu a chloroxynilu je dán rozdílnou rychlostí odštěpení halogenu a rychlostí procesu dimerizace.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CG - Electrochemistry

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of the Electroanalytical Chemistry and Journal of Electroanalytical Chemistry and Interfacial Electrochemistry

  • ISSN

    0022-0728

  • e-ISSN

  • Volume of the periodical

    622

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    8

  • Pages from-to

  • UT code for WoS article

    000260564200011

  • EID of the result in the Scopus database