The Vibration-Rotation Energies of Molecules

Coriolis interactions, intensity perturbations and potential functions in polyatomic molecules

“…Despite these developments in the theory of zeta constants, there have becn few discussions of the effect on rovibrational spectra of Coriolis interactions between non-eiegenerate vibrational levels; most of the treatments of the theory in this more general situation are due to Nielsen 7 and his co-workers. Recently several examplcs of such perturbations in rovibrational spectra have been observed 10 -12 ; useful information may come fron1 such observations in several ways.…”

Vibration-rotation bands of ammonia: 1. The combination bands square-root2 + (square-root1,square-root3)

“…Nielsen [14]. In his article the pyram!dal XXa mol:-cule of which NHa is an example, IS descnbed m som~ detail.…”

Vibration–rotation alchemy in acetylene (12C2H2), at low vibrational excitation: from high resolution spectroscopy to fast intramolecular dynamics

“…The rotational l-type resonance connects sub-states related by ∆k = ±2, with matrix elements scaling as J(J+1) 62,63,64,65 . The resultant mixing of the basis states is illustrated in Figure 2 for the {0,2,k e ,e,u} polyad.…”