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  • 1980-1984  (2)
  • 1984  (1)
  • 1980  (1)
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  • 1980-1984  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Anodic oxidation of N-anions. III. Anodic oxidation of the N-anions of diacylimides: A search for a new electrochemical synthesis of hydrazine (1980)
    Springer
    Journal of applied electrochemistry 10 (1980), S. 97-107 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The anodic oxidation of N-anions of diacylimides which are acidic enough to be deprotonated by relatively weak bases in protic solvents was investigated with respect to the electrode kinetics and preparative aspects. All imide anions are oxidized in a one-electron step to the respective imide radicals. Of the imides investigated, two were cyclic carboxylic imides (succinimide and phthalimide) three were sulphonyl imides (di-p-toluene and di-benzene sulphimide, dimethane sulphimide) and one was a mixed carboxylate-sulphonate imide (saccharate). The imide radicals produced by anodic oxidation of the dicarboxylate imides do not couple to form a hydrazine derivative but induce solvent oxidation by H-abstraction. The disulphonyl imides couple to unstable hydrazine derivatives although H-abstraction occurs to more than 80%. Only the anodic coupling of the N-anion of imido-disulphonic acid to hydrazine tetrasulphonate discovered by Grinstead [3] can be performed with good selectivity and current and mass yields. The optimum conditions for this reaction are determined in order to show that it may serve in the future as one step in a new hydrazine process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00937344
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Laser FM spectroscopy with photochemical modulation (1984)
    Springer
    Applied physics 35 (1984), S. 105-111 
    Details
    ISSN: 1432-0649
    Keywords: 0.7.65.Eh ; 82.50.-m ; 33.20.Kf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have combined the techniques of frequency-modulation spectroscopy (FMS) and photochemical-modulation spectroscopy to carry out high-resolution, high-sensitivity absorption measurements on the formyl and amino radicals. Using the (0,90, 0)-(0,01, 0) band of theÃ,2 A″- $$\tilde X$$ ,2 A′ transition of HCO at 614 nm, we obtained a sensitivity limit for absorption of 1.5×10−6. Reconstructed spectra of several HCO lines are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697429
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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