Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5416215 | Journal of Molecular Spectroscopy | 2006 | 13 Pages |
Abstract
The jet-cooled Fourier-transform microwave spectrum of N,N-dimethylacetamide was recorded in the region of 12-24Â GHz, and was analyzed to determine rotational constants and nuclear quadrupole coupling constants. Coriolis-like coupling parameters characterizing interaction between internal rotation of methyl groups and the overall rotation were also determined from internal-rotation tunneling splittings of the rotational transitions. The Coriolis-like coupling parameters permitted determination of the barrier heights to internal rotation of the three methyl groups, which were found to be 677, 237, and 183Â cmâ1 for the C-methyl top, the trans-N-methyl top and the cis-N-methyl top, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Masaharu Fujitake, Yuji Kubota, Nobukimi Ohashi,