Electronic effects of alkyl groups—I: Absorption spectra of mono-aryl carbonium ions in sulphuric acid
JFA Williams
Index: Williams,J.F.A. Tetrahedron, 1962 , vol. 18, p. 1487 - 1493
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Citation Number: 22
Abstract
Abstract-The ultra-violet absorption spectra of 31 mono-aryl carbinols in concentrated sulphuric acid have been measured. The results provide direct evidence of the dependence of carbonium ion stability upon inductive and space-polarization effects. ... WHEN carbinols or olefins are dissolved in concentrated sulphuric acid, intense ab- sorption bands are observed in the near ultra-violet. These bands have been attributed to the formation of stable carbonium ions l - ...
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