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An Organosilicon Cluster with an Octasilacuneane Core: A Missing Silicon Cage Motif

Authors

  • Dr. Shintaro Ishida,

    Corresponding author
    1. Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515 (Japan)
    2. Present address: Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578 (Japan)
    • Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515 (Japan)
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  • Dr. Kyohei Otsuka,

    1. Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515 (Japan)
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  • Yuki Toma,

    1. Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515 (Japan)
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  • Prof. Dr. Soichiro Kyushin

    Corresponding author
    1. Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515 (Japan)
    • Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515 (Japan)
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  • This work was supported in part by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology (Japan) and the Japan Society for the Promotion of Science. We also thank Prof. Dr. Takeshi Yamanobe, Gunma University (Japan) for measurement of the CP-MAS NMR spectrum.

Abstract

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Cagey silicon: A silicon cluster, consisting of sixteen silicon atoms and composed of an octasilacuneane core (red, see picture) fused with cyclotetrasilanes (orange), was synthesized by reductive tetramerization of tetrachlorocyclotetrasilane. Analytical and theoretical studies reveal the unique structural and electronic features of this organosilicon cluster.

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