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1980 (1)
1Author    Eberhard Bothe, Dietrich Schulte-FrohlindeRequires cookie*
 Title    Reaction of Dihydroxymethyl Radical with Molecular Oxygen in Aqueous Solution  
 Abstract    Dihydroxymethyl radical (1) was found to react with oxygen diffusion controlled (k = 4.5 x 10 9 M _1 s -1). The final products of the reaction are formic acid and 1/2 hydrogen peroxide. The precursor of H2O2 was shown to be O2' -which is formed with G(02" -) = 6.3 (a value which includes the 02"~ formed by H atoms and oxygen (G(H) = 0.55)). If it is assumed that dihydroxymethylperoxyl radicals are formed as intermediates the rate constant of 02'~ formation must be > 10 6 s -1 . A bimolecular reaction of two dihydroxy-methylperoxyl radicals forming tetroxides does not occur at the dose rates used. The rate constants for the establishment of the equilibrium CH2(0H)2 + H2O2 CHaOH(OOH) + HaO k-3 have been determined at pH 5.7 and 19 °C to be k3=1.9x 10~ 2 M^s -1 and k_3 = 1.5 X 10~ 6 M _1 s _1 in aqueous solution. 
  Reference    Z. Naturforsch. 35b, 1035—1039 (1980); eingegangen am 7. März 1980 
  Published    1980 
  Keywords    Dihydroxymethyl Radical, Oxydation with Oxygen, Conductivity, Aqueous Solution 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1035.pdf 
 Identifier    ZNB-1980-35b-1035 
 Volume    35