ChemInform Abstract: CARBON-13 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPICAL AND STEREOCHEMICAL INVESTIGATIONS. 18. ELECTRIC FIELD EFFECTS ON CARBON-13 NUCLEAR MAGNETIC RESONANCE SHIFTS IN HETEROSUBSTITUTED ALKANES

1978 ◽  
Vol 9 (12) ◽  
Author(s):  
H.-J. SCHNEIDER ◽  
W. FREITAG
1976 ◽  
Vol 29 (12) ◽  
pp. 2571 ◽  
Author(s):  
W Adcock ◽  
BD Gupta ◽  
T Khor

A number of model substituted bicyclic aryl fluorides, including three new fluorobenzocycloalkenes, have been synthesized and their fluorine- 19 spectra measured. An analysis of the data leads to the important conclusion that electrostatic-field effects play an important role in determining aryl 19F chemical shifts. Further the relative π-electron distributions of several benzocycloalkenes are indicated.


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