Cluster isolated chemical reactions: Reactivity of Ba atoms and small Ba clusters with SF6 and CO2 molecules on large argon clusters
作者： C. Gée , M. A. Gaveau , O. Sublemontier , J. M. Mestdagh , J.-P. Visticot
DOI: 10.1063/1.474794
关键词: Laser-induced fluorescence 、 Covalent bond 、 Molecule 、 Reactivity (chemistry) 、 Chemistry 、 Atom 、 Barium 、 Crystallography 、 Cluster (physics) 、 Inorganic chemistry 、 Chemical reaction
摘要: The cluster isolated chemical reaction technique was used to investigate the reactivity of Ba/CO2 and Ba/SF6 systems in environment Ar≈6000 clusters. method extended document several aspects reactivity. Notably, mass spectrometry gives insight into full system deposited on Laser induced fluorescence (LIF) chemiluminescence are also as detection tools. Unexpectedly, we found that a single barium atom neither reacts with CO2 nor SF6 at temperature (32 K). In contrast, LIF results suggest formation weakly bound covalent Ba…CO2 complex. Finally, Ba2 larger aggregates react CO2, Ba3 SF6. chemiluminescent products Ba2O first case, BaF second. These observations rationalized ground harpoon model.
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