Abstract
A number of triaryl(4-fluorophenyl)tin compounds have been prepared. The fluorine chemical shifts relative to fluorobenzene as an internal standard have been measured for all these compounds in chloroform, and a linear relationship between these values and the Σσ o values for the substituted phenyl groups attached to the tin atom has been demonstrated. The results obtained suggest that the transmission of electronic effects from one aromatic ring to another in compounds of the type Ar 4Sn occurs mainly by an inductive mechanism. In conjunction with the data on similar systems containing other bridging atoms, the results obtained provide a quantitative measure of the relative ability of tin-aromatic carbon bonds to transmit electronic effects.
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