范德华复合物C_6H_5CH_3…N_2的共振双光子电离光谱  

Resonant Two-photon Ionization Spe ctra of the van der Waals Complex C_6H_5CH_3...N_2

作　　者：胡义华[1] 吴怀选[1] 王小涓[2] 张兴初[1] 杨世和[3] 

机构地区：[1]广东工业大学应用物理系 [2]广东工业大学继续教育学院,广州510090 [3]香港科技大学化学系

出　　处：《物理化学学报》2004年第2期154-157,共4页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20171014)资助项目~~

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474cm-1,与理论计算值非常接近.The resonant two-photons ionizatio n technique is employed to study jet-cooled van der Waals(vdW)complex C 6 H 5 CH 3 ...N 2 through the S 1 ←S 0 transition.By Comparing the spectr a of isotopic complex C 6 D 5 CD 3 ...N 2 ,we have tentatively assigned all th e observed spectral features to the c omplex C 6 H 5 CH 3 ...N 2 .The rich information about the complex i ntermolecular vdW viberational mod es and internal rotation of N 2 are ob-tained by the spectra.The binding en ergies for the complex C 6 H 5 CH 3 ...N 2 in the excited electronic state and i n the ground electronic state are abou t 494cm -1 and 474cm -1 ,those are very close to the calculated values.

关 键 词：范德华复合物 C6H5CH3…N2 共振双光子电离光谱 激发态 基态 键能 内转动 分子间范德华振动模式 苯分子 氮分子 

分 类 号：O621.13[理学—有机化学]