The Al50Cp*12 Cluster – A 138-Electron Closed Shell (L = 6) Superatom

Authors

  • Peneé A. Clayborne,

    1. Department of Chemistry, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
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  • Olga Lopez-Acevedo,

    1. Department of Chemistry, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
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  • Robert L. Whetten,

    1. Department of Chemistry, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
    2. School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta, GA 30332, USA
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  • Henrik Grönbeck,

    1. Competence Center for Catalysis and Department of Applied Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
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  • Hannu Häkkinen

    1. Department of Chemistry, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland
    2. Department of Physics, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland, Fax: +358-14-260-4756
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Abstract

Metal clusters stabilized by a surface ligand shell represent an interesting intermediate state of matter between molecular metal–ligand complexes and bulk metal. Such “metalloid” clusters are characterized by the balance between metal–metal bonds in the core and metal–ligand bonds at the exterior of the cluster. In previous studies, the electronic stability for the Al50Cp*12 cluster was not fully understood. We show here that the known cluster Al50Cp*12 can be considered as an analogue to a giant atom (“superatom”) with 138 sp electrons organized in concentric angular momentum shells up to L = 6 symmetry.

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