Unusual temperature dependence in dissociative electron attachment to 1,4-chlorobromobenzene

被引：15
|
作者：
Rosa, A
Barszczewska, W
Nandi, D
Ashok, V
Kumar, SVK
Krishnakumar, E
Brüning, F
Illenberger, E
机构：
[1] Free Univ Berlin, Inst Phys & Theoret Chem, D-14195 Berlin, Germany
[2] Univ Podlasie, Dept Chem, PL-08110 Siedlce, Poland
[3] Tata Inst Fundamental Res, Mumbai 400005, India
[4] Univ Sherbrooke, Ion Collis Lab, Dept Med Nucl & Radiobiol, Sherbrooke, PQ J1H 5N4, Canada
来源：
CHEMICAL PHYSICS LETTERS | 2001年 / 342卷 / 5-6期
关键词：
D O I：
10.1016/S0009-2614(01)00643-1
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：
Electron attachment to 1,4-chlorobromobenzene yields the ionic fragments Cl- and Br- appearing in the energy range approximate to0-1 eV with Br by about a factor of 70 more intense at room temperature. Increasing the temperature of the target molecule up to 540 K results in an unexpected temperature dependence of the cross-section in that it first increases and after passing a maximum (400 K for Br- and 460 K for Cl-) decreases. This behaviour is qualitatively interpreted by the temperature dependent population of the relevant normal modes containing the C-Cl and C-Br stretch vibration. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：536 / 544
页数：9
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