ESTIMATION OF BOND-DISSOCIATION GIBBS ENERGIES FOR CARBON HALOGEN BONDS IN ANION-RADICALS OF SOME ARYL HALIDES AND SUBSTITUTED BENZYL HALIDES

被引：32

作者：

DAASBJERG, K

机构：

[1] Department of Chemistry, University of Aarhus

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1994年 / 06期

关键词：

D O I：

10.1039/p29940001275

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A thermochemical cycle incorporating the standard potential E(RX/RX.-)-degrees of aryl halides and m- and p-substituted benzyl halides RX, the standard potential E(X./X-)-degrees of the halide ion X- and the bond dissociation Gibbs energy DELTAG(BDE)-degrees(RX) of RX is used to determine the bond dissociation Gibbs energy DELTAG(BDE)-degrees(RX.-) of the carbon-halogen bond in some anion radicals RX.-. The values of E(RX/RX.-)-degrees are not directly measurable for most benzylic substrates but can be approximated by the standard potentials for the Corresponding compounds in which the CH2X group is replaced by an H atom. The calculations are compared with experimental results and similar calculations published recently.

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页码：1275 / 1277

页数：3

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