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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Guided Ion Beam Studies of the Reactions of Ni~+, Cu~, and Zn~+ with CS_2 and COS
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Guided Ion Beam Studies of the Reactions of Ni~+, Cu~, and Zn~+ with CS_2 and COS

机译：Ni〜+，Cu〜和Zn〜+与CS_2和COS反应的引导离子束研究

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摘要

The reactions of atomic Ni~, Cu~+, and Zn~+ with CS_2 and COS are studied using guided-ion beam mass spectrometry. Different ion sources are used to characterize the relative reactivities of different electronic states of Ni~+ and Cu~+. Ground-state ions of all three metals undergo endothermic reactions to form MS~+ from both CS_2 and COS, as well as MCS~+ and MCO~+, respectively. In several cases, the cross sections for forming MCX~+ (X = O, S) exhibit two endothermic features, which are assigned to the formation of different structural isomers or electronically excited product states. From the thresholds associated with forming MS~+ and MCS~+, we determine D_0(Ni~+ - S) = 2.46 ± 0.04, D_0(Ni~+ - CS) = 2.43 ± 0.10 eV, D_0(Cu~+ - S) = 2.07 ± 0.15, D_0(Cu~+ - CS) = 2.47 ± 0.12 eV, D_0(Zn~+ - S) = 2.05 ±0.12, and D_0(Zn~+ - CS) = 1.54 ± 0.24 eV. The periodic trends in these values are discussed, and the nature of the bonding is analyzed. The results suggest that the initial mechanistic steps correspond to insertions of the metal ions into the C-S bonds of CXS (X = O, S).
机译：利用引导离子束质谱研究了Ni〜，Cu〜+和Zn〜+原子与CS_2和COS的反应。使用不同的离子源表征Ni〜+和Cu〜+不同电子态的相对反应性。这三种金属的基态离子都会发生吸热反应，分别从CS_2和COS以及MCS〜+和MCO〜+形成MS〜+。在某些情况下，用于形成MCX〜+（X = O，S）的横截面表现出两个吸热特征，这些特征被指定为形成不同的结构异构体或电子激发的产物态。从与形成MS〜+和MCS〜+有关的阈值中，我们确定D_0（Ni〜+-S）= 2.46±0.04，D_0（Ni〜+-CS）= 2.43±0.10 eV，D_0（Cu〜+-S ）= 2.07±0.15，D_0（Cu〜+-CS）= 2.47±0.12 eV，D_0（Zn〜+-S）= 2.05±0.12，D_0（Zn〜+-CS）= 1.54±0.24 eV。讨论了这些值的周期性趋势，并分析了键合的性质。结果表明，初始的机械步骤对应于金属离子插入CXS的C-S键（X = O，S）。

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