Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
2186 J. Am. Chem. SOC.1983, 105, 2186-2193 significant, and showed no trend with dielectric constant. Thus,
 

Summary: 2186 J. Am. Chem. SOC.1983, 105, 2186-2193
significant, and showed no trend with dielectric constant. Thus,
it appears that solvent effects are not important in those cases
in which there are no changes in rotamer population^.^^
Conclusions
Good correlations of the orthobenzylic coupling constants in
methyl aromatic compounds and unsaturated compounds (having
vinylic methyl groups) are found with the *-bond order q, the
square of q, and the mutual atom-atom polarizability A ~ ~ .
However, the linear dependence on 4 (which has no theoretical
basis) gives values which are much too high in the region of very
low bond orders.
In the extension of the study to molecules in which both con-
formational and bond order effects are important to the Job,it
is found that the generalization of the relationship of coupling
constant to A to include angular factors gives results which are
in very gooi'agreement with the experimental results. The
agreement is an improvement on the results based on the IND-
0-FPT methodS4and is much better than the correlation with
qz. It seems likely that the inadequacy of the latter is due to the

  

Source: Apeloig, Yitzhak - Department of Chemistry, Technion, Israel Institute of Technology

 

Collections: Chemistry