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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Photodissociation Spectra for Size-Selected Sr~+(CH_3OH)_n and Sr~+(CH_3OD)_n Clusters
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Photodissociation Spectra for Size-Selected Sr~+(CH_3OH)_n and Sr~+(CH_3OD)_n Clusters

机译:尺寸选择的Sr〜+(CH_3OH)_n和Sr〜+(CH_3OD)_n团簇的光解离光谱

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摘要

This study presents photodissociation data on the mass-selected clusters Sr~+(CH_3OH)_n and Sr~+(CH_3OD)_n, n = 1 - 4, in the wavelength range from 310 to 1500 nm. The parent ion clusters exhibit loss of hydrogen atoms by C-H bond cleavage in their ground electronic states, a channel that increases in magnitude with increasing cluster size. Electronic states of clusters based on excitation of metal-centered d,p ← s transitions are observed. The cluster spectra exhibit a size-dependent red shift that is consistent with increased metal-ligand repulsion with increasing size. The clusters decay by solvent evaporation, methyl radical loss to form the metal hydroxide cation, and loss of oxygen-bound hydrogen atoms to form the metal methoxide cation, SrOCH_3~+.
机译:这项研究提出了质量选择的簇Sr〜+(CH_3OH)_n和Sr〜+(CH_3OD)_n,n = 1-4,在310至1500 nm波长范围内的光解离数据。母离子簇在其基态电子状态下由于C-H键断裂而失去氢原子,该通道的大小随簇大小的增加而增加。观察到基于以金属为中心的d,p←s跃迁激发的团簇的电子态。团簇光谱表现出与尺寸有关的红移,这与随尺寸增加的金属-配体排斥增加有关。团簇因溶剂蒸发,甲基自由基的损失形成金属氢氧化物阳离子以及氧结合的氢原子的损失形成金属甲醇氧化物阳离子SrOCH_3〜+而衰变。

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