<sup>19</sup>F nuclear magnetic resonance studies of aromatic compounds. Part II. The<sup>19</sup>F chemical shifts in meta- and para-substituted fluorobenzenes, and 4-substituted 3′- and 4′-fluoro-trans-stilbenes
作者:I. R. Ager、L. Phillips、T. J. Tewson、V. Wray
DOI:10.1039/p29720001979
日期:——
the effects of substituents, X, upon the shielding of 19F nuclei in series of meta and para-X-fluorobenzenes, 4-X-4′-fluoro-trans-stilbenes, and 3′-fluoro-4-X-trans-stilbenes. The correlation of substituent chemical shifts for 19F nuclei in fluoroaromatic compounds with reactivity parameters is examined, and a reassessment is made of the Taft and Swain and Lupton separation of polar substituent effects