Acta Phys. -Chim. Sin. ›› 1989, Vol. 5 ›› Issue (05): 525-530.doi: 10.3866/PKU.WHXB19890504

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ESR STUDY ON THE PHOTOLYSIS OF CHLOROHYDROCARBONS

Liu Yang*; Xu Guangzhi; Sha Qinggui   

  1. Institute of Chemistry; Academia Sinica; Beijing; Department of Chemistry; Tsingkua University; Beijing
  • Received:1988-02-01 Revised:1988-05-31 Published:1989-10-15
  • Contact: Liu Yang

Abstract: A new kind of nitrone, 2, 4,-dinitrophenyl-t-butyl nitrone (DNPBN), has been used for investigating the photolytic mechanism of chlorohydroearbon and trapping active chlorine atom and other C-centre radicals produced therein. The results show that under the irradiation of high-pressure mercury lamp, for polychlorohydrocarbon, the more the substitute chlorine atom, the easier the homolysis of C—Cl bond of its and seldem chlorine can be trapped from mono- or dichlorohydrocarbons. On the other hand, both chlorine, a more persistent adduct (Cl—DNPBN)~· than other famillar adducts, such as (Cl—PBN)~·, can be obtained.