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化学学报
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化学学报 ›› 1995, Vol. 53 ›› Issue (3): 209-213.    下一篇

研究论文

氯乙烯的同步幅射光电离及C-H和C-CI键离解能的测定

盛六四;陶李;张允武;俞书勤   

  1. 中国科学技术大学国家同步辐射实验室;中国科学技术大学近代化学系
  • 发布日期:1995-03-15

Photoionization and determination of the C-H and C-CI bond dissociation energies of vinylchloride by synchrotron radiation

SHENG LIUSI;TAO LI;ZHANG YUNWU;YU SHUQIN   

  • Published:1995-03-15

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利用同步辐射对C~2H~2CI进行了光电研究,得到了电离势IP(C~2H~2CI)为10.03±0.01eV及其碎片的光电离出现势,导出了离解能D~0(C~2H~2CI-H),D~0(C~2H~2CI^+-H),D~0(C~2H~2CI-H^+),D~0(C~2H~2-CI)和D~0(C~2H~3^+-CI),它们的值分别为5.09±0.05,5.02±0.08,8.66±0.05,3.64±0.10和2.56±0.05eV.

关键词: 反应机理, 氯乙烯, 光电离, 离解能, 同步辐射, 出现势

The photoionization and photodissocn. of vinyl chloride have been performed by synchrotron radiation. The ionization potential of C2H3Cl and appearance potentials of fragment ions have been measured. The ionization potential of C2H3Cl is 10.03 ?0.01 eV and the dissociation energies D0(C2H2Cl-H), D0(C2H2Cl+-H), D0(C2H2Cl-H+), D0(C2H3-Cl) and D0(C2H3+-Cl) are 5.09 ?0.05, 5.02 ?0.08, 8.66 ?0.05, 3.64 ?0.10, 2.56 ?0.05 eV resp.

Key words: REACTION MECHANISM, CHLOROETHENE, PHOTOIONIZATION, DISSOCIATION ENERGY, SYNCHRONOUS RADIATION

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