Structure of Polyvanadotungstates. I. The Crystal Structure of α-(CN<SUB>3</SUB>H<SUB>6</SUB>)<SUB>4</SUB>V<SUB>2</SUB>W<SUB>4</SUB>O<SUB>19</SUB>

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概要

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• Crystals of α-(CN<SUB>3</SUB>H<SUB>6</SUB>)<SUB>4</SUB>V<SUB>2</SUB>W<SUB>4</SUB>O<SUB>19</SUB> are monoclinic, space group P2<SUB>1</SUB> with the cell dimensions, <I>a</I>=14.85(2), <I>b</I>=19.48(2), <I>c</I>=9.48(1) Å, β=92.6(2)°. The X-ray structure determination showed that V<SUB>2</SUB>W<SUB>4</SUB>O<SUB>19</SUB><SUP>4−</SUP> anion has the hexaniobate-type structure consisting of 6 edge-shared MO<SUB>6</SUB> octahedra. Each M position is randomly occupied by vanadium and tungsten atoms with a 2: 4 probability. This randomness makes it impossible to determine whether V<SUB>2</SUB>W<SUB>4</SUB>O<SUB>19</SUB><SUP>4−</SUP> anion has the <I>cis</I> or <I>trans</I> configuration or both. The final <I>R</I> value was 0.086 with anisotropic temperature factors for metals and isotropic factors for other lighter atoms.

• 公益社団法人 日本化学会の論文

著者

• Nishikawa Keiko

  Department Of Biology Faculty Of Science Ochanomizu University

• Kobayashi Akiko

  Department Of Biopharmaceutics Meiji Pharmaceutical University

• Sasaki Yukiyoshi

  Department of Chemistry and The Research Centre for Spectrochemistry, Faculty of Science, The University of Tokyo

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