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醇/水混合团簇的多光子电离质谱及从头算研究

, PP. 280-283

Keywords: 光谱学,质子化团簇,多光子电离,飞行时间质谱

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Abstract:

利用多光子电离技术和飞行时间质谱仪实验研究了醇/水混合团簇的光电离质谱。在脉冲激光波长为355nm条件下,观测到以质子化(ROH)n(H2O)H+混合团簇离子和(ROH)nH+团簇离子为主的电离产物。醇水混合团簇电离后团簇离子发生内部质子化转移反应是形成质子化团簇离子的主要原因。应用量化计算,构造了质量数较小的几个团簇离子的可能的空间几何构型,发现二元团簇离子(CH3OH)n(H2O)H+是以(CH3OH)H+作为内核离子,再通过氢键与其它分子组合而构成团簇离子。

References

[1]  Kebarle, et al,Competitive solvation of the hydrogen ion by water and methanol molecules studied in the gas phase[J]. J. Am. Chem. Soc. 1967, 89(23): 5753-5757.
[2]  A. J. Stace, A. K. Shukla. Preferential solvation of hydrogen ions in mixed clusters of water, methanol, and ethanol[J]. J. Am. Chem. Soc, 1982, 104(20): 5314-5318.
[3]  William J. Herron,M. Todd Coolbaugh,et al. Observation of magic numbers for (ROH)nH3O+ heteroclusters (R=CH3, CH3CH2, (CH3)2CH, and CH3CH2CH2): implications for cluster ion structure [J]. J. Am Chem. Soc. 1992,114(10),3684-3689.
[4]  Xu Mingkun, Zhang Shudong. Multiphoton ionization mass spectrum of ammonia-methanol complex cluster and ab initio calculation[J]. Journal of Atomic and Molecular Physics (原子与分子物理学报),2007,24(5):1049-1054
[5]  Samy El-Shall M, Christopher Marks. Reactions and Thermochemistry of Protonated Methanol Clusters Produced by Electron Impact Ionization[J]. J. Phys. Chem., 1992, 96: 2045-2051.
[6]  A. J. Stace, A. K. Shukla. Preferential solvation of hydrogen ions in mixed clusters of water, methanol, and ethanol[J]. J. Am. Chem. Soc, 1982, 104(20): 5314-5318.
[7]  Li L B, Wang X Y. The Proton Transfer Reaction in the Binary Cluster of Ammonia and Methanol[J].Chinese Journal of Chemical Physics(化学物理学报).2000,13:641-648.
[8]  Yue Li, Xianghong Liu, Xiuyan Wang, Nanquan Lou. Proton transfer reactions within the NH3---CH3OH+ cluster. Chem.Phys.Lett. 1997, 276(5): 339-345.
[9]  Cai Tingdong, Zhang Shudong Reaction of methanol clusters following multiphoton ionization by VU laser [J]Laser Journal(激光杂志),2006,27(6):40-42.
[10]  Jiang Surong, Zhang Shudong. Mass spectra of multiphoton ionization of water/methanol clusters[J]. Laser Journal(激光杂志),2007,28 (1):29 - 30.

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