Inorganic Cryptand: Size-Selective Strong Metallic Cation Encapsulation by a Disilicoicosatungstate (Si2W20) Polyoxometalate

Authors

  • Akihiro Yoshida Dr.,

    1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-7220
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  • Yoshinao Nakagawa Dr.,

    1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-7220
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  • Kazuhiro Uehara Dr.,

    1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-7220
    2. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)
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  • Shiro Hikichi Prof. Dr.,

    1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-7220
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  • Noritaka Mizuno Prof. Dr.

    1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-7220
    2. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)
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  • This work was supported by the CREST program of the JST, the global COE program (GCOE) “Chemistry Innovation through Cooperation of Science and Engineering” of the Ministry of Education, Culture, Science, Sports and Technology of Japan, (MEXT), and a Grant-in-Aid for Scientific Research from the MEXT. A.Y. is grateful to JSPS for financial support.

Abstract

original image

Wählerisch: Das Polyoxometallat [(γ-SiW10O32)2(μ-O)4]8− (18−) verfügt über einen Hohlraum, der größenselektiv die Ionen Pb2+, Sr2+, Na+, Ag+, K+ und Rb+ (hellblau im Bild; Si verdeckt, W grau, O rot) aufnimmt, während die größeren Ba2+- und Cs+-Ionen (rosa) ausgeschlossen bleiben. Die Molekülstrukturen von [Mn+1](8−n)− (Mn+=Pb2+, Sr2+, Ag+, Ba2+) wurden röntgenographisch charakterisiert.

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