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

Chinese Journal of Magnetic Resonance ›› 1990, Vol. 7 ›› Issue (2): 187-194.

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

Feng Liangbo, Wang Hanging

Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, People's Republic of China

Received:1989-06-05 Revised:1989-09-13 Published:1990-06-05 Online:2018-01-23

Abstract

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

Feng Liangbo, Wang Hanging. AN ESR STUDY OF PHOTOCHEMICAL REACTION OF 2, 1,3-BENZOXADIAZOLE-1-OXIDE WITH SECONDARY AMINES[J]. Chinese Journal of Magnetic Resonance, 1990, 7(2): 187-194.

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

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