The crystal structure of N-methylviologenium 2-dicyanomethylene-1,1,3,3-tetracyanopropanediide,((CH3NC5H4C5H4NCH3)2+(C10N6)2-).

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概要

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• [(CH<SUB>3</SUB>·NC<SUB>5</SUB>H<SUB>4</SUB>·C<SUB>5</SUB>H<SUB>4</SUB>N·CH<SUB>3</SUB>)<SUP>2+</SUP>·(C<SUB>10</SUB>N<SUB>6</SUB>)<SUP>2−</SUP>] crystallizes in the space group of <I>P</I>2<SUB>1</SUB>⁄<I>c</I>, with four formula units. The unit-cell dimensions are; <I>a</I>=14.625(2), <I>b</I>=8.361(2), <I>c</I>=17.332(3) Å, and β=107.51(2)°. The crystal structure was established by means of the symbolic addition method. For 2767 non-zero reflections, <I>R</I> is 0.074. In the crystal, divalent cations and divalent anions are stacked alternately to form infinite columns which are parallel to the b axis. Short atomic contacts are mostly involved between nitrogen atoms of the anion and carbon atoms of the cation. The (C<SUB>10</SUB>N<SUB>6</SUB>)<SUP>2−</SUP> anion takes a three-bladed propeller shape; however, it has no symmetry, unlike those in hexahydrated calcium and quinolinium salts. In the [(CH<SUB>3</SUB>·NC<SUB>5</SUB>H<SUB>4</SUB>·C<SUB>5</SUB>H<SUB>4</SUB>N·CH<SUB>3</SUB>)<SUP>2+</SUP>] cation, two pyridine rings are twisted about the central C–C bond; the dihedral angle between the planes of two rings is 19.6(2)°.

著者

• Kai Yasushi

  Department Of Applied Chemistry Faculty Of Engineering Osaka University

• Kasai Nobutami

  Department Of Applied Biological Science Tokyo University Of Science

• Yasuoka Noritake

  Department Of Life Science Faculty Of Science Himeji Institute Of Technology

• Nakamura Kenichi

  Department Of Applied Physics School Of Science And Engineering Waseda University

• Nakamura Kenichi

  Department of Applied Chemistry, Faculty of Engineering, Osaka University

• Yasuoka Noritake

  Department of Applied Chemistry, Faculty of Engineering, Osaka University

• NAKAMURA KENICHI

  Department of Anatomy Kurume University School of Medicine

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