HOT-ATOM CHEMISTRY OF 14C+ IN BENZENE . PARTIAL DEGRADATIONS AND SUGGESTED MECHANISMS

被引：21

作者：

POHLIT, HM

LIN, TH

LEMMON, RM

机构：

[1] Laboratory of Chemical Biodynamics, Lawrence Radiation Laboratory, University of California, Berkeley

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1969年 / 91卷 / 20期

关键词：

D O I：

10.1021/ja01048a003

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Seven 14C-products (toluene, cycloheptatriene, phenylacetylene, “U-2,” biphenyl, diphenylmethane, and phenylcycloheptatriene) from hot-atom reactions of 14C ions of 5-keV kinetic energy in solid (—196°) benzene have been partially degraded. The results indicate the formation of the intermediate 14C-carbenes, methylene, benzylidene, and cycloheptatrienylidene, and reactive 14-containing fragments, particularly a C2 species. Cyclo-heptatrienylidene and cycloheptatriene apparently undergo extensive isomerization during, or immediately following, their formation. This isomerization is compared with other known modes of isomerization of cycloheptatriene and found to be best represented as 1,2-hydrogen shifts, It appears that, in the system under investigation, a mechanism different from the thermal has to be assumed. © 1969, American Chemical Society. All rights reserved.

引用

页码：5425 / &

共 38 条

[11] THERMAL INTRAMOLECULAR REARRANGEMENT OF METHYL-1,3,5-CYCLOHEPTATRIENES IN GAS PHASE .2. THERMODYNAMIC DATA FROM EQUILIBRIUM STUDIES OF POSITIONAL ISOMERS [J].