Journal
JOURNAL OF PHYSICAL CHEMISTRY A
Volume 124, Issue 37, Pages 7511-7517Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpca.0c06269
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Funding
- JSPS KAKENHI [19K05183]
- Grants-in-Aid for Scientific Research [19K05183] Funding Source: KAKEN
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Al atoms generally adopt the +3 oxidation state and form stoichiometric oxides such as Al2O3 in the bulk phase. Among small cationic gas-phase clusters, nearstoichiometric clusters such as Al2O4+, Al3O5+, Al4O6+, Al4O7+, Al5O7+, and Al5O8+ have been readily generated in experimental studies. However, when a single Au atom was included in the clusters, oxygen-deficient clusters such as AuAl4O5+ were formed in high abundance; in these clusters, the Au atom accepted electron density from the Al atoms. The geometrical structures and atomic charges in the clusters suggest that a single Au atom can substitute for O atoms in Al oxide clusters. This propensity originates from the high electron and low oxygen affinities, which, together, constitute an unusual property of Au.
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