ISSN:
1573-9171
Keywords:
electronegativity
;
effect of substituents
;
19F NMR
;
quantum chemistry
;
silicon
;
tin
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Ab initio calculations of group electronegativities (χ) of Ar3Si and Ar3Sn groups containing 13 types ofmeta-, para- and polysubstituted phenyl groups have been performed. Calculated values of χ(Ar3Si) and χ(Ar3Sn) correlate better with the σ0 Taft constants than with the σ Hammett constants, which is indicative of the inductive nature of the effect of aryl groups on electronegativities of Ar3M groups. Good correlations have been found between19F chemical shifts and the corresponding values of χ(Ar3Si) and χ(Ar3Sn) for the Ar3SiC6H4F-4, Ar3SnC6H4F-4, Ar3SnCH2C6H4F-4, and Ar3SnSC6H4F-4 compounds.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00707207
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