Tetramerized structure of (DMET)2ReO4 and its apparent metallic behavior in resistivity.
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概要
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The crystal structure of (DMET)<SUB>2</SUB>ReO<SUB>4</SUB> (DMET: 5,6-dihydro-2-(4,5-dimethyl-1,3-diselenol-2-ylidene)dithiolo[4,5-<I>b</I>][1,4]dithiin) was determined, and its resisitivity and thermoelectric power were measured. Crystal data; (C<SUB>10</SUB>H<SUB>10</SUB>S<SUB>4</SUB>Se<SUB>2</SUB>)<SUB>2</SUB>·ReO<SUB>4</SUB>, <I>M</I><SUB>r</SUB>=1082.88, triclinic, P\bar1, <I>a</I>=6.715(1) Å, <I>b</I>=14.486(2) Å, <I>c</I>=15.867(2) Å, α=101.95(4)°, β=90.05(1)°, γ=78.43(1)°, <I>V</I>=1478.2(3) Å<SUP>3</SUP>, <I>Z</I>=2, <I>D</I><SUB>x</SUB>=2.43 Mg m<SUP>−3</SUP>, μ(Mo <I>K</I>α)=9.62 mm<SUP>−1</SUP>, <I>F</I>(000)=1022, <I>T</I>=297 K, <I>R</I>=0.074 for 4391 reflections. The crystal has columnar structure. In the column, a large degree of tetramerization is observed. The resistivity under the normal pressure has metallic temperature dependence above ca. 295 K. The thermoelectric power is essentially constant above 200 K and no anomaly was detected around 295 K. The apparent metallic behavior was attributed to the small activation energy (band-gap) and the temperature dependence of the carrier mobility.
- 公益社団法人 日本化学会の論文
著者
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Kikuchi Koichi
Department Of Chemistry Tokyo Metropolitan University
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Ikemoto Isao
Department Of Chemistry Faculty Of Science Tokyo Metropolitan University
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Saito Kazuya
Department Of Aeronautics And Astronautics Graduate School Kyoto University
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Kobayashi Keiji
Department Of Chemistry College Of Arts And Sciences The University Of Tokyo
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Kobayashi Keiji
Department of Chemistry, College of Arts and Sciences, The University of Tokyo
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Ishikawa Yoshimitsu
Department of Chemistry, Faculty of Science, Tokyo Metropolitan Unversity
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Ishikawa Yoshimitsu
Department of Chemistry, Faculty of Science, Tokyo Metropolitan University
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Ishibashi Masayoshi
Department of Chemistry, Faculty of Science, Tokyo Metropolitan Unversity
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Ikemoto Isao
Department of Chemistry and Research Center for Spectrochemistry, Faculty of Science, The University of Tokyo
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Ikemoto Isao
Department of Chemistry, Faculty of Science, Tokyo Metropolitan Unversity
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Saito Kazuya
Department of Chemistry, Faculty of Science, Tokyo Metropolitan Unversity
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