Moment of inertia, backbending, and molecular bifurcation.
We predict an anomaly in highly excited bending spectra of acetylene with high vibrational angular momentum. We interpret this in terms of a vibrational shape effect with moment of inertia backbending, induced by a sequence of bifurcations with a transition from "local" to "orthogonal" modes.
Tyng
Vivian
V
Institute of Theoretical Science, Department of Chemistry, University of Oregon, Eugene, Oregon 97403, USA.
Kellman
Michael E
ME