THE TORSIONAL-WAGGING TUNNELING PROBLEM AND TORSIONAL-WAGGING-ROTATIONAL PROBLEM IN HYDRAZINE
Loading...
Date
1985
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Results derived previously for the rotational levels of the eight-framework and three-large-amplitude vibrational problem in $H_{2}$N-NH$_{2}$, using a tunneling formalism based on a treatment of the vibration-rotation problem as a whole, are rederived here in a much simpler fashion, using a tunneling formalism based on separate treatment of the vibrational and rotational problems. The present formalism is thus much more akin to the usual vibration-rotation formalism, and the origins of the various contributions to the vibration-rotation energy levels can be understood relatively easily. It is convenient here, as in earlier treatments, to make extensive use of permutation-inversion and extended-group (double-group) ideas, but it is necessary in the present treatment to consider tunneling between 16 minima in molecular coordinate space, i.e. between a number of minima which is twice the number of non-superimposable molecular frameworks that can actually be constructed for $H_{2}$N-NH$_{2}$.
Description
Author Institution: Department of Physics, Faculty of Science, Kanazawa University; Molecular Spectroscopy Division, National Bureau of Standards