FTIR spectroscopy of the CD3-rocking bands of Cd3OH and 13Cd3OH
R. M. Lees · 1990
High-resolution FTIR spectra of the weak CD3-rocking bands of CD3OH and 13CD30H have been obtained. These bands lie below the strong C-0 stretching bands, and show a rather different structure. Numerous P, Q and R branch series have been assigned, from which the branch origins have been determined. The structure of the bands and the separation of n=0 and n=l branch origins indicate a substantial increase of about 31% in the torsional barrier height V3 from the ground to the CD3-rock states, but the usual energy level model does not appear to reproduce the observed branch origin patterns.