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New electrochemical oscillator based on the cation-catalyzed reduction of nitroaromatic radical anions
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SYSNO ASEP 0326233 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title New electrochemical oscillator based on the cation-catalyzed reduction of nitroaromatic radical anions Title Nový elektrochemický oscilátor založený na kationtově katalyzované redukci nitroaromatických radikál aniontů Author(s) Hromadová, Magdaléna (UFCH-W) RID, ORCID, SAI
Pospíšil, Lubomír (UFCH-W) RID, ORCID
Sokolová, Romana (UFCH-W) RID, ORCID, SAI
Fanelli, N. (IT)Source Title Electrochimica acta. - : Elsevier - ISSN 0013-4686
Roč. 54, č. 22 (2009), s. 4991-4996Number of pages 6 s. Language eng - English Country GB - United Kingdom Keywords nitroaromatic radical ; cationic catalysis ; electrochemical impendance ; oscillation Subject RIV CG - Electrochemistry R&D Projects IAA400400802 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) IAA400400505 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) 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) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000267585500009 DOI 10.1016/j.electacta.2009.01.068 Annotation Nitroaromatic compound bifenox (methyl 5-(2,4-dichlorophenoxy)-2-nitrobenzoate) is used as a model system for a new NDR oscillator in the aprotic solvent acetonitrile. The reduction of bifenox yields the anion radical, which is further reduced by an overall addition of three electrons and four protons to the corresponding phenylhydroxylamine. The second reduction step is strongly influenced by the nature and concentration of the tetraalkylammonium salts used as the supporting electrolytes. At the low concentration of tetrahexylammonium hexafluorophosphate the anion radical reduction occurs at extremely negative potentials due to the double-layer effect on the negatively charged reactant. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2010
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