Photodissociation spectroscopy of benzene cluster ions in ultraviolet and infrared regions: Static and dynamic behavior of positive charge in cluster ions
Photodissociation spectroscopy of benzene cluster ions in ultraviolet and infrared regions: Static and dynamic behavior of positive charge in cluster ions
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苯簇离子在紫外和红外区的光解光谱：簇离子中正电荷的静态和动态行为
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
N. Nishi
中科院分区：
文献类型：
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作者：
Y. Inokuchi;N. Nishi
在紫外区和红外区对苯团簇离子进行了光解离光谱研究。在(C6H6)3+ 的紫外光解谱中，在2 5 5 nm处出现一个特征宽带。该带被指定为存在于三聚体中的溶剂苯分子的π*←π跃迁。这与以前的具有二聚体离子核和溶剂苯分子的离子团簇的模型一致。(C6H6)n+(n=3-5)的红外光解离谱在3066 cm−1处有一个尖锐的谱带，该谱带是由二聚体离子核的C-H伸缩振动引起的。(C6H6)n+(n=3-5)的红外光谱与二聚体离子核和溶剂苯分子的C-H伸缩带相结合所得到的模型光谱进行了拟合。混合苯三聚体离子与一个或两个苯-d6分子的红外光解离光谱表明，三聚体中的激发二聚体离子核位置与光碎片二聚体离子种类无关。这个.。
Photodissociation spectroscopy is applied to benzene cluster ions in ultraviolet and infrared regions. In the ultraviolet photodissociation spectrum of (C6H6)3+ , a characteristic broad band emerges at 255 nm. This band is assigned to a π*←π transition of a solvent benzene molecule that exists in the trimer. This is in accordance with the previous model of the ion cluster with a dimer ion core and a solvent benzene molecule. The infrared photodissociation spectra of (C6H6)n+ (n=3–5) show a sharp band at 3066 cm−1. The band is attributed to a C–H stretching vibration of the dimer ion core. The infrared spectra of (C6H6)n+ (n=3–5) are fitted to the model spectra reproduced by combining the C–H stretching bands of the dimer ion core and the solvent benzene molecule. The infrared photodissociation spectra of mixed benzene trimer ions with one or two benzene-d6 molecules demonstrate that there is no correlation between the excited dimer ion core site in the trimer and the photofragment dimer ion species. This ...