Acta Phys. -Chim. Sin. ›› 1997, Vol. 13 ›› Issue (04): 317-321.doi: 10.3866/PKU.WHXB19970407

• ARTICLE • Previous Articles     Next Articles

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


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