RELATIVE REACTIVITIES OF SOME C-H BONDS IN HYDROGEN ABSTRACTION BY METHYL RADICALS AT 950 K

被引：4

作者：

KOPINKE, FD ^{[1
]}

REMMLER, M ^{[1
]}

MENSING, H ^{[1
]}

HUGO, P ^{[1
]}

机构：

[1] TECH UNIV BERLIN, INST TECH CHEM, D-10623 BERLIN, GERMANY

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 04期

关键词：

D O I：

10.1021/j100055a021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Relative reactivities of C-H bonds in alkylbenzenes in the hydrogen abstraction by methyl radicals at about 950 K were determined by means of labeled compounds. The following values normalized to the primary aliphatic C-H bond were obtained: r(Ph-H) = 0.7 +/- 0.1; r(Bz-H) = 4.6 +/- 0.5; r(sec,benzyl) = 8.7 +/- 1.0; r(tert,benzyl) = 9.0 +/- 1.0. The combination of these high-temperature values with low-temperature kinetic data from the literature reveals the absence of a straight connection between strength and reactivity of C-H bonds.

引用

页码：1171 / 1175

页数：5

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