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题名: Multiphoton ionization and ab initio calculation of C4H5N-(NH3)n hydrogen-bond clusters
作者: Li, Y;  Hu, YJ;  Lu, RC;  Wang, XY
关键词: multiphoton ionization ;  pyrrole ;  TOF-MS ;  binary cluster
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2000-09-01
DOI: 10.3866/PKU.WHXB20000910
卷: 16, 期:9, 页:810-817
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Multiphoton ionization of binary clusters (C4H5N) -NH3 at 355 and 532 nm have been investigated using a TOF mass spectrometer, The experimenal results showed that normal cluster ions and protonated cluster ions were produced at both laser wavelengths. The protonated products came from the intracluster proton transfer reaction. The existence of NH3 in the clusters increased the ionization cross sections of the clusters, The higher ionization efficiency at 355 nm results from the (2 + 1) resonance multiphoton ionization of the pyrrole molecule. A peculiar low abundance of (C4H5N)- (NH3)(2)(+) was observed, ab initio calculations indicated that when ammonia number n greater than or equal to 3, two hydrogen bonds between ammnia chain and pyrrole ring can be formed, and the cluster become more stable. The channel ratio for the formation of protonated and unprotonated products increases with the increase of n, in agreement with the trend of proton affinity of (C4H5N) - (NH3)(n),
关键词[WOS]: PYRROLE-WATER
语种: 英语
WOS记录号: WOS:000089651200010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138809
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Li, Y,Hu, YJ,Lu, RC,et al. Multiphoton ionization and ab initio calculation of C4H5N-(NH3)n hydrogen-bond clusters[J]. ACTA PHYSICO-CHIMICA SINICA,2000,16(9):810-817.
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