Mixed-Valence Ruthenium Diphosphates with a Tunnel Structure: ARu_2(P_2O_7)_2 (A= Li, Na, Ag, and Cu) and Ru_2(P_2O_7)_2

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Mixed-valence ruthenium diphosphates with a tunnel structure, ARu<sub>2</sub>(P<sub>2</sub>O<sub>7</sub>)<sub>2</sub> (A = Li, Na, Ag, and Cu), were prepared by the reaction of an amorphous ruthenium phosphate, H<sub>2</sub>RuP<sub>3</sub>O<sub>10</sub>, with Li<sub>2</sub>CO<sub>3</sub>, NaNO<sub>3</sub>, AgNO<sub>3</sub>, and Cu<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>·3H<sub>2</sub>O, respectively. The structure has a three-dimensional network constructed with RuO<sub>6</sub> and P<sub>2</sub>O<sub>7</sub> groups, and has large tunnels where A cations reside. In the sodium system, two isotypic compounds were obtained. One was obtained as single crystals and the X-ray structure analysis showed ruthenium and sodium vacancies. Another was obtained as powder and Rietveld analysis did not indicate ruthenium vacancies. It is paramagnetic and shows an antiferromagnetic transition at around 5.5 K. The phosphate with no cation in the tunnel, Ru<sub>2</sub>(P<sub>2</sub>O<sub>7</sub>)<sub>2</sub>, was obtained as a powder upon heating amorphous ruthenium phosphate (atomic ratio P/Ru is <SUB></SUB> 4).

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  • Bulletin of the Chemical Society of Japan

    Bulletin of the Chemical Society of Japan 70(11), 2703-2708, 1997-11-15

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10008925281
  • NII書誌ID(NCID)
    AA00580132
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00092673
  • NDL 記事登録ID
    4346202
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-B35
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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