
TY  - JOUR
A1  - Adcock, W 
A1  - Bettess, PD 
A1  - Rizvi, SQA 
T1  - Fluorine-19 substituent chemical shifts (SCS)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1970
VL  - 23
IS  - 10
SP  - 1921
EP  - 1937
KW  - 
UR  - https://doi.org/10.1071/CH9701921 
N2  - A number of substituted aryl fluorides have been synthesized and their fluorine-19 substituent chemical shifts (scs) have been measured. The comparison of the scs of 1-(m-fluorophenyl)propan-2-one, 1-(p-fluorophenyl)propan-2-one, 7-fluorotetral-2-one, and 6-fluorotetral-2-one confirm Dewarsl-3 conclusions that long-range non-mesomeric effects are transmitted through space and that this polar effect makes a considerable contribution to the overall 19F scs in aromatic systems. It is also shown that the fluorine substituent chemical shifts of +F+M substituents in 7-substituted 2-fluoronaphthalenes (7&#946;) can be interpreted in terms of a modified FM treatment. The mesomeric-field effect is shown to be important in this disposition (78) of naphthalene. 
ER  -

