波谱学杂志 ›› 1990, Vol. 7 ›› Issue (2): 187-194.

• 研究论文 • 上一篇    下一篇

苯并呋咱-1-氧化物与二级胺光化学反应的电子自旋共振研究

冯良波, 汪汉卿   

  1. 中国科学院兰州化学物理研究所
  • 收稿日期:1989-06-05 修回日期:1989-09-13 出版日期:1990-06-05 发布日期:2018-01-23
  • 基金资助:
    国家自然科学基金

AN ESR STUDY OF PHOTOCHEMICAL REACTION OF 2, 1,3-BENZOXADIAZOLE-1-OXIDE WITH SECONDARY AMINES

Feng Liangbo, Wang Hanging   

  1. Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, People's Republic of China
  • Received:1989-06-05 Revised:1989-09-13 Online:1990-06-05 Published:2018-01-23

摘要: 本文报道了二苯胺、甲基苯基胺、甲潜苄胺、二苄胺、二异丙胺和二乙胺分别与苯并呋咱-1-氧化物在紫外光照下发生光化学反应的电子自旋共振(ESR)研究结果。结果表明:紫外光的作用首先使苯并呋咱-1-氧化物处于激发态,它与二胺作用生成激基态络合物,经氧转移和二胺的氮氢键断裂而最终生成相应的氮氧自由基。

关键词: 苯并呋咱-1-氧化物, 光化学反应, 自由基, ESR

Abstract: The photolysis of 2, 1, 3-benzoxadiazole-1-oxide in the presence of various organic amines have been investigated using ESR spectroscopy. Our results show that nitroxide radicals are the stable products of the photooxidation of the corresponding organic amines. Oxygen-transfer exciplex derived from the triplet state of 2,1,3-benzoxadiazole-1-oxide is an intermediate to give nitroxide through N-H bond cleavage in the organic amine within the exciplex.

Key words: 2,1 3-benzoxadiazole-1-oxide, Photochemical reaction, Free radical, ESR