Molecular Structure of Acetamide as Studied by Gas Electron Diffraction
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概要
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The bond distances (<I>r<SUB>g</SUB></I>) and angles (<I>r</I><SUB>α</SUB>) in acetamide CH<SUB>3</SUB>CONH<SUB>2</SUB> have been determined by gas electron diffraction as follows: C–C=1.519±0.006 Å, C–N=1.380±0.004 Å, C=O=1.220±0.003 Å, C–H (average)=1.124±0.010 Å, N–H (average)=1.022±0.011 Å, ∠N–C=O=122.0±0.6°, ∠C–C–H (average)=109.8±2°, and ∠C–C–N=115.1±1.6° (or 112.2±1.6°). In comparison with the molecular structure in the crystal, the C–N bond is about 0.05 Å longer, whereas the C=O bond is about 0.04 Å shorter. The C–N and C=O bonds appear to be slightly shorter than the corresponding bonds in <I>N</I>-methylacetamide.
- 公益社団法人 日本化学会の論文
著者
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Kuchitsu Kozo
Department Of Chemistry Faculty Of Science The University Of Tokyo
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Kitano Mitsuo
Department of Chemistry, Faculty of Science, The University of Tokyo
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