Journal of the American Chemical Society p. 6300 - 6311 (1986)
Update date:2022-08-17
Topics:
Skell, Philip S.
Baxter, Harry N.
Tanko, James M.
Chebolu, Venkatasuryanarayana
The concept of radical reactivity mediated by solvation has rested mainly on the alteration of Cl. properties by aromatic solvents.For this reason, the full scope of the benzene/Cl. system has been reexamined to evaluate the discription of that system based largely on a ?-complex (solvation).At the present time, the ?-complex description rests narrowly on the assignment of a 490-nm absorption, which, even if correct, could not provide an unambiguous structure assignment.Results are presenteed which described the selectivities in alkane substitutions as a function of the concentrations of both benzene and the alkane.Selectivities increase with decreasing alkane concentrations, reaching a plateau below 0.1 M alkane.The change in selectivity is the result of variable contributions of both a low- and a high-selectivity intermediate, LSI and HSI, respectively.The observed selectivity at a given
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(1987)