Au10−: isomerism and structure-dependent O2 reactivity

Literature Information

Publication Date 2009-02-26
DOI 10.1039/B823159A
Impact Factor 3.676
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Abstract

Structure isomers of the Au10− cluster and their chemical reactivity with O2 are studied using photoelectron spectroscopy under different experimental conditions. In addition to the global minimum triangular D3h structure, at least three low-lying isomers (X′, X″, and X‴) are observed distinctly using argon tagging and O2 titration. The D3h structure has a very high electron affinity of 3.88 eV, whereas the low-lying isomers have lower electron affinities (2.86, 3.09, and 3.45 eV for X′, X″, and X‴, respectively). It is found that the D3h global minimum does not react with O2 and can only form a physisorbed Au10(O2)− van der Waals complex under cold experimental conditions. The three low-lying isomers are reactive with O2 and can be systematically titrated out of the cluster beam using an O2-seeded carrier gas, leaving a clean D3h Au10− beam.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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