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  • 1975-1979  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Nitrogen-15 magnetic resonance of glycine (1975)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 97 (1975), S. 269-272 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00835a006
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Deuterium isotope effects in solutions of 2,4-pentanedione (1977)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 9 (1977), S. 157-159 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Proton and deuterium n.m.r. measurements in acetylacetone and 3,3-d2-acetylacetone are reported. Deuterium-isotope effects on chemical shifts and keto-enol equilibria as a function of concentration in the two solvents triethylamine and pyrrole are determined. A strong solvent concentration dependence for d-isotope effects is observed in triethylamine; in pyrrole no dependence is obtained. The results are interpreted in terms of an equilibrium between the symmetrical (C2v) and asymmetrical (Cs) enolic forms in acetylacetone. The usefulness of 2H n.m.r. for the study of exchange processes is demonstrated.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270090311
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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