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Citation: Li Xuechu*；
Sayan, . THE STUDY OF THE REACTION RATE AND MECHANISM OF CN(V″=0,1)RADICAL WITH HYDROCARBONS BY USING LASER INDUCED FLUORESCENCE METHOD[J]. Acta Physico-Chimica Sinica, ;1988, 4(02): 205-211. doi: 10.3866/PKU.WHXB19880217 shu

THE STUDY OF THE REACTION RATE AND MECHANISM OF CN(V″=0,1)RADICAL WITH HYDROCARBONS BY USING LASER INDUCED FLUORESCENCE METHOD

1.
Dalian Institute of Chemical Physics; Chinese Academy of Sciences
Department of Chemistry; Howard University; Washington D.C. U.S.A

Corresponding author: ,
Received Date: 12 July 1986
Available Online: 15 April 1988

The rate constants of eleven hydrocarbons and fluorocarbons with CN (V″=0, 1) at 300 K have been measured by using Laser Induced Fluorescence(LIF) method For the saturated hydrocarbons, the rate constants are changed from (5.6±0.3)×10~(-13) for CH_4 to (2.3±0.2)×10~(-10)cm~3 molecu~(-1).s~(-1) for C_7H_(16). The rate constants of the reaction of CN with alkenes and alkynes are close to the gas kinetic rate in spite of the structure of the molecules.The rate constants and mechanism of CN with the saturated hydrocarbons, H_2 and CH_3OH can be explained satisfactorily by the long distance attractive potential. The reaction of CN with alkenes and alkynes can only proceed through the addition into π bond. The influence of vibrational energy on the reaction rate was not found in the reactions of CN radical with hydrocarbon compounds.
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