| 草酰氯和2,3-丁二酮的紫外光解 |
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| 引用本文： | 李强,李红志,孔繁敖. 草酰氯和2,3-丁二酮的紫外光解[J]. 物理化学学报, 1999, 15(3): 259-264. DOI: 10.3866/PKU.WHXB19990312 |
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| 作者姓名： | 李强 李红志 孔繁敖 |
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| 作者单位： | The State Key Laboratory of Molecular Reaction Dynamics,Insititute of Chemistry,Chinese Academy of Science,Beijing 100080 |
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| 基金项目： | 国家自然科学基金!资助项目 ( 2 96730 0 3) |
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| 摘 要： | 羰基化合物的光解一直是分子反应动力学研究感兴趣的课题之一,近年来许多研究小组用不同的实验方法对气相羰基化合物特别是丙酮分子的紫外光解进行了广泛的研究[14],然而对一个分子中含有两个羰基的二酮类分子却很少研究.早期对(ＣｌＣＯ)2和(ＣＨ3ＣＯ)2的光解反应研究主要集中在液相宏观动力学方面[5-7],这些研究都没有在分子的层次上进行考察,因此对它们的紫外光解机理并不清楚,例如两者光解首先发生的是Ｃｌ或ＣＨ3基的脱落,还是分子中央的Ｃ-Ｃ键断裂?光解后剩余的自由基第二步解离是光解还是热解?光解后碎片的能量分布如何?等等.为此…
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| 关 键 词： | 草酰氯 2 3=丁二酮 紫外光解 红外发射光谱 |
| 收稿时间： | 1998-03-25 |
| 修稿时间： | 1998-05-08 |
UV Photolysis of Oxalyl Chloride and 2,3-butanedione Studied by Time-resolved FTIR |
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| Li Qiang,Li Hongzhi,Kong Fan'ao. UV Photolysis of Oxalyl Chloride and 2,3-butanedione Studied by Time-resolved FTIR[J]. Acta Physico-Chimica Sinica, 1999, 15(3): 259-264. DOI: 10.3866/PKU.WHXB19990312 |
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| Authors: | Li Qiang Li Hongzhi Kong Fan'ao |
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| Affiliation: | The State Key Laboratory of Molecular Reaction Dynamics,Insititute of Chemistry,Chinese Academy of Science,Beijing 100080 |
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| Abstract: | The photodissociation of oxalyl chloride and 2,3 butanedione at 193nm and 248nm have been studied by Time resolved FTIR emission spectroscopy. The IR fluorescence emission was observed and the rotational and vibrational populations of the CO product were obtained. It is suggested that the photolysis mechanism is two RCO radicals formed via a fission of C-C bond, followed by a decomposition of the RCO intermediate to vibrationally excited CO( v ) and R radical. |
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| Keywords: | Oxalyl chloride 2 3 butanedione UV photolysis IR emission spectrum |
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