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  • Polar field susceptibility parameters  (1)
  • 1985-1989  (1)
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  • 1985-1989  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 26 (1988), S. 211-213 
    ISSN: 0749-1581
    Keywords: 13C NMR ; 19F NMR ; 4-Substituted bicyclo[2.2.2]octane-1-carbonyl fluorides ; SCS ; Polar field parameters ; Polar field susceptibility parameters ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Fluorine-19 substituent chemical shifts (SCS) are reported for a series of 4-substituted bicyclo[2.2.2]octane-1-carbonyl fluorides containing a limited but a representative number of dipolar substituents. The 19F SCS, which cover a very narrow range (〈0.5 ppm), are found to correlate poorly against polar field parameters (σF). Polar field susceptibility parameters (ρF) for the fluorine probe were determined indirectly and their origin is briefly discussed in the light of the carbonyl 13C SCS which reflect π polarization of the COF group.
    Type of Medium: Electronic Resource
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