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溴代烷烃与活性氮的反应发光研究
引用本文:唐晓闩,王鸿梅,韩海燕,李建权,金顺平,黄国栋,储焰南,张为俊,周士康.溴代烷烃与活性氮的反应发光研究[J].物理化学学报,2005,21(4):392-396.
作者姓名:唐晓闩  王鸿梅  韩海燕  李建权  金顺平  黄国栋  储焰南  张为俊  周士康
作者单位:Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031; Laboratory of Atomic and Molecular Physics, College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000
基金项目:合肥物质科学研究院院长基金(20020602)资助项目~~
摘    要:在流动余辉装置上, 利用N2空心阴极放电制备活性氮, 研究了活性氮与溴代烷烃(CHBr3、CH2Br2、C2H5Br、C4H9Br) 反应的化学发光.上述所有反应中, 在550~750 nm波段均观察到了较强的NBr (b1Σ+→X3Σ-)跃迁发射谱. 同时在活性氮与CHBr3和CH2Br2的反应中, 在流动管下游还观察到了CN (A2π, B2πX2Σ+)的发射谱. 验证性的实验表明, 激发态NBr (b1Σ+)是由二步过程形成: N(4S)与溴代烷烃反应生成NBr (X3Σ-), 再通过N2 (A 3Σu+)分子能量转移到激发态NBr (b1Σ+); 而激发态的CN是通过N(4S) + CBr→CN(A, B) + Br过程形成的.

关 键 词:活性氮  能量转移  发射光谱  NBr  CN  
收稿时间:2004-09-17
修稿时间:2004年9月17日

Chemiluminescence of Alkyl Bromides Reaction with Active Nitrogen
TANG,Xiao-Shuan,WANG,Hong-Mei,HAN,Hai-Yan,LI,Jian-Quan,JIN,Shun-Ping,HUANG,Guo-Dong,CHU,Yan-Nan,ZHANG,Wei-Jun,ZHOU,Shi-Kang.Chemiluminescence of Alkyl Bromides Reaction with Active Nitrogen[J].Acta Physico-Chimica Sinica,2005,21(4):392-396.
Authors:TANG  Xiao-Shuan  WANG  Hong-Mei  HAN  Hai-Yan  LI  Jian-Quan  JIN  Shun-Ping  HUANG  Guo-Dong  CHU  Yan-Nan  ZHANG  Wei-Jun  ZHOU  Shi-Kang
Institution:Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031; Laboratory of Atomic and Molecular Physics, College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000
Abstract:Active nitrogen has been prepared by hollow-cathode discharge of N2 in a flowing afterglow system. Strong emission spectra of NBr(b1Σ+X3Σ-) have been observed when alkyl bromides (CHBr3, CH2Br2, C2H5Br, C4H9Br) are added to a stream of active nitrogen. In addition, weak CN(A2π, B2πX2Σ+) emission spectra have been detected only in the case of CHBr3 or CH2Br2 as reagents. Some tentative experiments show that the electronically excited NBr(b1Σ+) is formed by mechanism of metastable N2(A3Σu+) electronic-to-electronic energy transfer from ground state NBr(X3Σ-), which is from the reaction of N(4S) with alkyl bromides. The excited CN (A2π, B2π) comes from the reaction of N(4S) with CBr formed due to CHBr3(or CH2Br2) dissociation by N2(A3Σu+).
Keywords:Active nitrogen    Energy transfer    Emission spectra    NBr    CN
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