物理化学学报 >> 1997, Vol. 13 >> Issue (04): 317-321.doi: 10.3866/PKU.WHXB19970407

研究论文 上一篇    下一篇

间硝基苯胺的同步辐射光电离研究

武国华,盛六四,高辉,张允武   

  1. 中国科学技术大学，国家同步辐射实验室，合肥 230029
  • 收稿日期:1996-09-20 修回日期:1996-11-19 发布日期:1997-04-15
  • 通讯作者: 张允武

Photoionization Studies of m-nitroaniline Using Synchrotron Radiation

Wu Guo-Hua,Sheng Liu-Si,Gao Hui,Zhang Yun-Wu   

  1. National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei,Anhui,China 230029
  • Received:1996-09-20 Revised:1996-11-19 Published:1997-04-15
  • Contact: Zhang Yun-Wu

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摘要：

 利用同步辐射光电高质谱法对间硝基苯胺（C6H6N2O2）进行了研究, 测得了其电离势IP（C6H6N2O2）为9.66±0.05ev，以及一些碎片离子出现势AP，计算出了离解能D0（N2O－C6H6N+)和离子生成焓△Hf（C6H6N＋）. 给出了间硝基苯胺的同步辐射光电离质谱图，并对主要碎片离子的产生过程进行了初步分析.

关键词: 同步辐射, 光电离, 质谱, 电离势, 间硝基苯胺

Abstract:

The photoionization and photodissociative ionization processes of m-nitroaniline (CeH6N2O2) have been investigated with synchrotron radiation (SR). The ionization potential (IP) of m-nitroaniline and the appearance potentials (AP) of the ionic fragments from the SR dissociative photoionization of C6H6N2O2 have been measured. Based on the IP(C6H6N2O2), AP(C6H6N+) and the related molecular formation enthalpies, D0(O2N-C6H6N+ )and △Hf(C6H6N+) have been evaluated. The mass spectrum of C6H6N2O2 obtained with SR photoionization has been presented. The most possible channels of dissociative photoionization have been discussed.

Key words: Synchrotron radiation, Photoionization, Ionization potertial, Mass spectrum, m-nitroaniline