Knowledge Bank

The $2242-2273cm-1$ region of the $\nu 4$ band in $CD3Br$ has been remeasured at a resolution limit of $0.025cm-1$. Line assignments have been extended up to $J=50$ in some sub-bands. Transitions in the $KAK=-8$ sub-band have been assigned, and the perturbation apparent in this region has been analyzed by considering the Coriolis x-y interaction with $\nu 3+\nu 5\pm 1+\nu 6\pm 1$. The Coriolis x-y coupling parameter $Wxy$ and the $\nu 3+\nu 5\pm 1+\nu 6\pm 1$ band center $(in cm-1)$ are 0.1960 and 2339.17 for $CD379Br$, while the corresponding values for $CD381Br$ are 0.01956 ad 2337.95.