Low energy electron attachment by bromoalkanes

被引：13

作者：

Barszczewska, W ^{[1
]}

Kopyra, J ^{[1
]}

Wnorowska, J ^{[1
]}

Szamrej, I ^{[1
]}

机构：

[1] Univ Podlasie, Dept Chem, PL-08110 Siedlce, Poland

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2004年 / 233卷 / 1-3期

关键词：

electron attachment; negative ions; electron swarms; halocarbons;

D O I：

10.1016/j.ijms.2003.12.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Thermal electron attachment processes in the mixtures of CH3CH2CH2Br, CH3CHBrCH3, CH2BrCH2Br, CH2FCH2Br and CF3CH2Br with carbon dioxide have been investigated using an electron swarm method. It has been found that all the investigated compounds attach electrons only in a two-body process. Corresponding rate constants have been determined to be equal to 1.1 x 10(-11), 1.4 x 10(-12), 1.8 x 10(-8), 5 x 10(-11) and 1.4 x 10(-9) cm(3) molecule(-1)s(-1), respectively. The dependence of the electron capture rate constants on electronic polarizability of the accepting center of the molecule has been demonstrated. The average rate constant for CH3Br, CH3CH2Br and CH3CH2CH2Br equal to (6 +/- 2) x 10(-12)cm(3) molecule(-1)s(-1) is recommended. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：199 / 205

页数：7

共 41 条

[1] Dissociative electron attachment in chloroalkanes and the correlation with vertical attachment energies [J].