物理化学学报 >> 2004, Vol. 20 >> Issue (02): 154-157.doi: 10.3866/PKU.WHXB20040209

研究论文 上一篇    下一篇

范德华复合物C6H5CH3…N2的共振双光子电离光谱

胡义华;吴怀选;王小涓;张兴初;杨世和   

  1. 广东工业大学应用物理系,广东工业大学继续教育学院,广州 510090;香港科技大学化学系, 香港,九龙
  • 收稿日期:2003-07-24 修回日期:2003-10-08 发布日期:2004-02-15
  • 通讯作者: 胡义华 E-mail:yihuahu@tom.com

Resonant Two-photon Ionization Spectra of the van der Waals Complex C6H5CH3…N2

Hu Yi-Hua;Wu Huai-Xuan;Wang Xiao-Juan;Zhang Xing-Chu;Yang Shi-He   

  1. Department of Applied Physics, School of Continual Education, Guangdong University of Technology, Guangzhou 510090; Department of Chemistry, Hong Kong University of Science & Technology, Kowloon, Hong Kong
  • Received:2003-07-24 Revised:2003-10-08 Published:2004-02-15
  • Contact: Hu Yi-Hua E-mail:yihuahu@tom.com

摘要: 由复合物C6H5CH3…N2共振双光子电离光谱获得了复合物分子间范德华振动模式和N2的内转动的大量信息.通过对比同位素分子C6D5CD3…N2的光谱,我们合理地归属了所观察到的C6H5CH3…N2复合物的所有谱线.由光解离碎片的机理分析,推得复合物C6H5CH3…N2的激发态和基态的键能大约是494和474 cm-1,与理论计算值非常接近.

关键词: van der Waals振动, 内转动, 键能

Abstract: The resonant two-photons ionization technique is employed to study jet-cooled van der Waals (vdW) complex C6H5CH3…N2 through the S1←S0 transition. By Comparing the spectra of isotopic complex C6D5CD3…N2, we have tentatively assigned all the observed spectral features to the complex C6H5CH3…N2. The rich information about the complex intermolecular vdW viberational modes and internal rotation of N2 are obtained by the spectra. The binding energies for the complex C6H5CH3…N2 in the excited electronic state and in the ground electronic state are about 494 cm-1 and 474 cm-1, those are very close to the calculated values.

Key words: van der Walls vibrations, Internal rotation, Binding energy