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'Polarography' in keywords Facet   Publication Year 1972  [X]
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1972[X]
1Author    Ludwig Holleck, Gholamali KazemifardRequires cookie*
 Title    Salzbildung der Diazoaminobenzole (Triazene) im Zuge der Elektrolyse in aprotischem Lösungsmittel Salt Formation during Electrolysis of Diazoaminobenzenes (Triazenes) in Aprotic Solvent  
 Abstract    In contrast to aqueous and methanolic solutions the polarographic reduction of diazoamino-benzenes (DAAB) in the aprotic solvent dimethylformamid occurs in two waves with the combined hight corresponding to a four electron reduction. The first wave results from the four electron reduction of the fraction (1/5) of the DAAB molecules which obtain the necessary protons from the remaining (4/5) DAAB molecules. The resulting DAAB anions are only reduced at the considerably more negative potentials of the second wave. Then the reduction occurs also in a four electron step and leads to the cleavage of the molecule. Potentiostatic electrolysis at the limiting current region of the first polarographic wave results in coloured solutions. The colour depends on the nature of the substituent. Salt formation was monitored spectrophotometrically and inferences pertaining to structure are drawn. The experimental results show that mercury compounds which might possibly be formed as inter-mediary species react immediately with the cations of the supporting electrolyte to form the cor-responding DAAB salts. 
  Reference    (Z. Naturforsch. 27b, 1166—1169 [1972]; eingegangen am 22. März/17. Juli 1972) 
  Published    1972 
  Keywords    Polarography, Diazoaminobenzenes, Salt formation, Dimethylformamide 
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 TEI-XML for    default:Reihe_B/27/ZNB-1972-27b-1166.pdf 
 Identifier    ZNB-1972-27b-1166 
 Volume    27