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'Redox Potentials' in keywords Facet   section ZfN Section B  [X]
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1981 (2)
1Author    G. Abou-Elenien+, J. Rieser++, N. Ismail+++, K. WallenfelsRequires cookie*
 Title    Elektrochemische Eigenschaften von Dihydropyridin-und Pyridinderivaten Electrochemical Properties of Pyridine and Dihydropyridine Derivatives  
 Abstract    The electrochemical oxidation and reduction properties of different dihydropyridines and pyridines have been investigated in non aqueous solvent as benzonitrile and aceto-nitrile with tetra-n-butylammonium perchlorate as supporting electrolyte at platinium electrodes using DC-voltametry, cycl. voltametry and coulometry. Possible redox-mechanisms are discussed. 
  Reference    Z. Naturforsch. 36b, 386—390 (1981); eingegangen am 26. November 1980 
  Published    1981 
  Keywords    Pyridines, Dihydropyridines, Electrochemical Behavior, Redox-Potentials 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0386.pdf 
 Identifier    ZNB-1981-36b-0386 
 Volume    36 
2Author    Michael Neumann-Spallart, K. KalyanasundaramRequires cookie*
 Title    On the One and Two-Electron Oxidations of Water-Soluble Zinc Porphyrins in Aqueous Media  
 Abstract    The one and two-electron oxidations of water soluble ionic zinc porphyrins (Zinctetra-methylpyridylporphyrin, ZnTMPyP, Zinc-tetra-p-sulfonato-phenyl-porphyrin, ZnTPPS, and Zinc-tetra-p-carboxy-phenylporphyrin, ZnTPPC) leading to the porphyrin /7-cations and /7-dications have been investigated in water by electrochemical (cyclic voltammetry and controlled potential electrolysis) and chemical methods. The half-wave potentials for the oxidation are shown to be markedly dependent on the charge on the /?-substituents. While the one-electron oxidations for all these porphyrins are reversible, the dication formation leads to labile isoporphyrins as intermediates. 
  Reference    Z. Naturforsch. 36b, 596—600 (1981); received December 1 1980/February 19 1981 
  Published    1981 
  Keywords    Redox Potentials, yr-Cation Radicals, Electrochemistry 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0596.pdf 
 Identifier    ZNB-1981-36b-0596 
 Volume    36