O. Ohashi, R. Ishihara, K. Murakami
Apr 1, 1976
Citations
0
Influential Citations
15
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The microwave spectrum of syn-acetaldehyde oxime-d was investigated in the frequency region 7.5∼35 GHz. Several a-type R-branch transitions were identified and the following rotational constants in MHz were obtained: A=45682, B=4057.21, C=3806.13. The transitions of syn-acetaldehyde oxime-d are split into the A and E species by tunneling of the methyl group through the potential barrier hindering the internal rotation. From these separations the height of the barrier was determined to be 1948 cal mol−1. The dipole moment of the molecule was determined to be 0.938 D from the Stark effect.