收稿日期: 2010-05-20
修回日期: 2010-06-10
网络出版日期: 2011-03-15
基金资助
Supported by the National Natural Science Foundation of China (10675112), 973 fund of Chinese Ministry of Science and Technology(2010CB934504), and the Knowledge Innovation Foundation of the Chinese Academy of Sciences(KJCX2-YW-N24)
Dissociative photoionization of methylbutenol: experimental and computational investigations
Received date: 2010-05-20
Revised date: 2010-06-10
Online published: 2011-03-15
Supported by
Supported by the National Natural Science Foundation of China (10675112), 973 fund of Chinese Ministry of Science and Technology(2010CB934504), and the Knowledge Innovation Foundation of the Chinese Academy of Sciences(KJCX2-YW-N24)
孙月 , 赵玉杰 , 方文正 , 孙金大 , 单晓斌 , 刘付轶 , 盛六四 , 王振亚 . 甲基丁烯醇的光电离实验与理论研究[J]. 中国科学院大学学报, 2011 , 28(2) : 161 -168 . DOI: 10.7523/j.issn.2095-6134.2011.2.005
Vacuum ultraviolet (VUV) dissociative photoionization of methylbutenol (C5H10O) in 9.0~15.5 eV was investigated with photoionization mass spectrometry using synchrotron radiation (SR). The ionization energy of C5H10O and the appearance energies for the main fragment ions were determined with photoionization efficiency curves. The photodissociation mechanisms of methylbutenol were discussed based on comparison of our experimental results with those predicted by the quantum-chemical calculations. The dissociation channels may be divided into two types: the direct bond cleavage in C5H10O+ and the reactions involving transition states. Transition states and intermediates for C4H+5 and C3H+5 were determined, and the reaction barriers were in agreement with the experimental dissociation energies.
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