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Infrared spectroscopic and theoretical studies on the reactions of copper atoms with carbon monoxide and nitric oxide molecules in rare-gas matrices

机译:稀有气体基质中铜原子与一氧化碳和一氧化氮分子反应的红外光谱和理论研究

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Reactions of laser-ablated Cu atoms with CO and NO mixtures in solid argon and neon have been investigated using matrix-isolation infrared spectroscopy. Copper carbonyls and copper nitrosyls have been observed, whereas copper carbonyl nitrosyl complexes are absent from the present experiments. New products, (CuCO)(2), [NO]Cu[NO], Cu-2(mu(2)-NO), and Cu(NO)(2)Cu, have been formed in the copper experiments and characterized using infrared spectroscopy on the basis of the results of the isotopic shifts, mixed isotopic splitting patterns, stepwise annealing, the change of reagent concentration and laser energy, and comparison with theoretical predictions. Density functional theory calculations have been performed on these copper carbonyls and copper nitrosyls, which support the identification of these products from the matrix infrared spectrum. A plausible reaction mechanism has been proposed to account for the formation of copper carbonyls and copper nitrosyls. Similar matrix experiments with Ag and Au produce no new species.
机译:使用基质隔离红外光谱研究了激光烧蚀的铜原子与固体氩气和氖气中的CO和NO混合物的反应。已经观察到羰基铜和亚硝基铜,而本实验中不存在羰基亚硝基铜络合物。在铜实验中形成了新产品(CuCO)(2),[NO] Cu [NO],Cu-2(mu(2)-NO)和Cu(NO)(2)Cu,并使用红外光谱法根据同位素位移,混合同位素分裂模式,逐步退火,试剂浓度和激光能量的变化以及与理论预测的比较结果为基础。已经对这些羰基铜和亚硝基铜进行了密度泛函理论计算,这有助于从基质红外光谱中鉴定这些产物。已经提出了一种合理的反应机理来解释羰基铜和亚硝基铜的形成。用银和金进行类似的基质实验不会产生新的物种。

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