The crystal and molecular structure of benzanilide.

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概要

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• The crystal structure of benzanilide has been determined from Weissenberg photographs using Cu <I>K</I>α radiations and refined to an <I>R</I> value of 0.075 for 766 independent reflections. The crystals are monoclinic, space group C2/c, <I>Z</I>=4, with <I>a</I>=24.34(4), <I>b</I>=5.325(3), <I>c</I>=8.012(8) Å, β=107.2(3)°, <I>D</I><SUB>m</SUB>=1.32 and <I>D</I><SUB>x</SUB>=1.321 g cm<SUP>−3</SUP>. Dihedral angle between the benzene rings is 62.6°, and each benzene ring makes dihedral angle of 31.3 and 31.6° with the plane of amido group as found in Kevlar and Nomex polymers. The molecules related by a <B>b</B>-translation are linked together by N–H…O hydrogen bond [N…O 3.112(6), H…O 2.03 Å, N–H…O 157°] to form a chain along <B>b</B>. The chains are held together primarily by dipole forces of carbonyl groups of the molecules related by inversion centers to form a sheet parallel to the <I>bc</I> plane. The sheets are stacked along <B>a</B> with disorder by van der Waals interactions.

• 公益社団法人 日本化学会の論文

著者

• Kashino Setsuo

  Department Of Chemistry Faculty Of Science Okayama University

• Ito Kuniaki

  Department Of Architecture Faculty Of Engineering Tohoku University

• Haisa Masao

  Department of Chemistry Faculty of Science Kwansei Gakuin University

• Ito Kuniaki

  Department of Chemistry, Faculty of Science, Okayama University

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