Mitsuo Kitano, Tsutomu Fukuyama, Kozo Kuchitsu
1973
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0
Influential Citations
106
Citations
Quality indicators
Journal
Bulletin of the Chemical Society of Japan
Abstract
The bond distances (rg) and angles (rα) in N-methylacetamide have been determined by gas electron diffraction as follows: C–C=1.520±0.005 A, N–C (methyl)=1.469±0.006 A, N–C (carbonyl)=1.386±0.004 A C=O=1.225±0.003 A, C–H (average)=1.107±0.005 A, ∠N–C=O=121.8±0.4°, ∠C–N–C=119.7±O.8°, ∠C–C–N=114.1±1.5°, ∠H–C–H(average)=110.4±2° and ∠H–N–C(carbonyl)=110±5°. In comparison with the molecular structure in the crystal, the N–C(carbonyl) bond is about 0.10 A longer, whereas the C–C and C=O bonds are about 0.02 and 0.01 A shorter, respectively. The two methyl groups are in the trans conformation about the N–C (carbonyl) bond, no other conformer being observed.