Centrifugal distortion and internal rotation analysis of the rotational spectra of N-methylmethanimine d 0 and d 5

Abstract

The ground state millimeter-wave spectra of CH 3NCH 2 and CD 3NCD 2 have been measured. The rotational constants, centrifugal distortion constants, and barrier hindering internal rotation of the methyl group have been determined for both species. For the parent species I α and ⦓( i,a) were also obtained, and for the perdeuteriated species the quadrupole coupling constants of 14N were determined.