Synthesis of optically active 2,2′-diselenocyanato-1,1′-binaphthyl and its molecular structure. Hypervalent nature of divalent selenium atom in crystal state

Authors

  • Shuji Tomoda,

    Corresponding author
    1. Department of Chemistry, College of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153, Japan
    • Department of Chemistry, College of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153, Japan
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  • Michio Iwaoka,

    1. Department of Chemistry, College of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153, Japan
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  • Kyuya Yakushi,

    1. Department of Chemistry, Faculty of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
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  • Atsushi Kawamoto,

    1. Department of Chemistry, Faculty of Science, Nagoya University, Furo-cho, Chigusa-ku, Nagoya 464, Japan
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  • Jiro Tanaka

    1. Department of Chemistry, Faculty of Science, Nagoya University, Furo-cho, Chigusa-ku, Nagoya 464, Japan
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Abstract

2,2′-Diselenocyanato-1,1′-binaphthyl(1), the first selenium-containing binaphthyl derivative, has been synthesized in optically active form the corresponding diamine by diazotization followed by the reaction with potassium selenocyanate. Its molecular structure is determined by X-ray diffraction method. It is revealed that selenium atoms have hypervalent penta-coordination in the crystal.

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