| 1，2-环氧丙烷的光电离解离通道与机理 |
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| 引用本文： | 刘付轶,盛六四,齐飞,武国华,高辉,周卫东,张允武.1，2-环氧丙烷的光电离解离通道与机理[J].物理化学学报,1999,15(9):845-849. |
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| 作者姓名： | 刘付轶 盛六四 齐飞 武国华 高辉 周卫东 张允武 |
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| 作者单位： | National Synchrotron Radiation Lboratory,University of Science and Technology of China,Hefei 230026 |
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| 基金项目： | 国家自然科学基金资助项目!(29673037) |
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| 摘 要： | 1,2环氧丙烷(下面简写成环氧丙烷)分子中含氧三员环具有很大的张力,且杂原子氧上含有未公享的电子对,分子中存在有很强的极性共价键,使其易于发生定向开环反应,常用于制造丙二醇、缩丙二醇、甘油等,是一种重要的有机合成化工原料和合成硝酸纤维脂等高分子材料良好的低沸点溶剂.近年来还发现,在含有的1,2环氧基团的天然产品中,这一结构单元对这些天然产品的生物活性起着十分重要的作用.环氧丙烷这种特殊结构,使其电离和解离过程与其它的杂环化合物(三员环以上)和一般的链状化合物有着明显的不同.这方面的研究工作仅有文献1,2]报导,其方法是…
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| 关 键 词： | 1 2-环氧丙烷 光电离 出现势 解离通道与机理 |
| 收稿时间： | 1998-11-17 |
| 修稿时间： | 1999-02-26 |
Photoionization/Dissociation Channels and Mechanism of 1,2-Propylene Oxide |
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| Liu Fuyi,Sheng Liusi,Qi Fei,Wu Guohua,Gao Hui,Zhou Weidong,ZhangYunwu.Photoionization/Dissociation Channels and Mechanism of 1,2-Propylene Oxide[J].Acta Physico-Chimica Sinica,1999,15(9):845-849. |
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| Authors: | Liu Fuyi Sheng Liusi Qi Fei Wu Guohua Gao Hui Zhou Weidong ZhangYunwu |
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| Institution: | National Synchrotron Radiation Lboratory,University of Science and Technology of China,Hefei 230026 |
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| Abstract: | Photoionization/dissociation of 1,2 propylene oxide are performed by using a time of flight mass spectrometer(TOF MS) with vacuum ultraviolet photons from Hefei synchrotron radiation source. The photoionization TOF mass spectrum and photoionization efficiency(PIE) curves of fragment ions are measured.The appearance potentials(AP) of these ions are obtained from their PIE curves. From these data, the formation enthalpies of the observed ions have been evaluated, and their possible channels have been analyzed. The mechanism of dissociative photoionization of 1,2 propylene oxide has been discussed. |
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| Keywords: | 1 2-propylene oxide Photoionization Appearance potential Dissociation channel and mechanism |
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