复合物C_6H_5CH_3…Ar分子间的外部振动频率  

Intermolecular Vibrational Frequencies of Complex C_6H_5CH_3...Ar

作　　者：胡义华[1] 吴怀选[1] 陈丽[1] 刘美希[1] 王小涓[1] 杨世和[2] 

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

出　　处：《高等学校化学学报》2003年第8期1447-1450,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 1710 14 )资助

摘　　要：利用双光子共振电离光谱和飞行时间质谱技术在超声分子束中观察到 C6H5CH3 …Ar的振动光谱 .借助同位素光谱效应、内转动能级和分子间振动能级的理论计算 ,合理地归属了涉及 CH3 转动和 Ar原子振动的光谱 ,并由此获得复合物分子间各种模式的振动频率 .A combined experimental and theoretical studies of resonant ionization spectra for van der Waals complexes C 6H 5CH 3...Ar and C 6D 5CD 3...Ar are reported. By using resonant ionization spectrometry, together with time-of-flight mass spectrometry, in supersonic molecular beam, the internal rotation for CH 3 and intermolecular vibration for atom Ar in the complexes are exhibited , all observed bands are rationally assigned by isotope effect and calculated at the internal rotational levels and external vibrational levels, and three modes frequencies of van der waals vibrations for complex C 6H 5CH 3...Ar are obtained.

关 键 词：复合物 C6H5CH3…Ar分子 外部振动频率 共振光电离光谱 内转动光谱 范德华振动 

分 类 号：O641.3[理学—物理化学] O657.3[理学—化学]