| 一氯甲烷同步辐射光电离研究: 离子生成焓与键能的测定 |
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| 引用本文： | 李全新,冉琴,盛六四,陈从香,俞书勤,张允武,马兴孝. 一氯甲烷同步辐射光电离研究: 离子生成焓与键能的测定[J]. 化学学报, 1997, 55(3): 236-241 |
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| 作者姓名： | 李全新 冉琴 盛六四 陈从香 俞书勤 张允武 马兴孝 |
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| 作者单位： | 中国科学技术大学化学物理系;中国科学技术大学国家同步辐射实验室 |
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| 摘 要： | 本文报道超音速射流冷却条件下, 用同步辐射光研究CH3Cl光电离及其解离电离的动力学, 测得CH3Cl的电离能(IP)为11.28±0.01eV。通过测定CH3Cl光解离电离碎片的出现势(AP), 并结合有关已确认的热力学数据, 获得了它们的标准生成焓、离子型分子中的键能、中性分子或自由基中的键能及母体离子的解离能等热力学数据。对CH3Cl分子VUV光解离电离通道进行了分析。
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| 关 键 词： | 生成焓 键能 光电离 氯甲烷 同步辐射 |
Photoionization studies of CH3Cl using synchrotron radiation: Measurements of ionic formation enthalpies and bond energies |
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| LI QUANXIN,RAN QIN,SHENG LIUSI,CHEN CONGXIANG,YU SHUQIN,ZHANG YUNWU,MA XINGXIAO. Photoionization studies of CH3Cl using synchrotron radiation: Measurements of ionic formation enthalpies and bond energies[J]. Acta Chimica Sinica, 1997, 55(3): 236-241 |
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| Authors: | LI QUANXIN RAN QIN SHENG LIUSI CHEN CONGXIANG YU SHUQIN ZHANG YUNWU MA XINGXIAO |
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| Abstract: | The kinetic processes of the photoionization and photodissociation ionization of CH3Cl have been investigated under the supersonic beam conditions using synchrotron radiation. The ionization energy of CH3Cl is 11.28±0.01eV. Based on the measured appearance potential (AP) of the ionic fragments, the related formation enthalpies of the ionic species, the bond dissociation energy (BDE) of ionic and neutral species, and the dissociation energy (DE) of parent ion have been evaluated. The most possible channel of dissociation photoionization were analyzed. |
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| Keywords: | ENTHALPY OF FORMATION BOND ENERGY PHOTOIONIZATION CHLOROMETHANE SYNCHRONOUS RADIATION |
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