dc.creator Hougen, Jon T. en_US dc.date.accessioned 2006-06-15T14:35:22Z dc.date.available 2006-06-15T14:35:22Z dc.date.issued 1980 en_US dc.identifier 1980-TE-2 en_US dc.identifier.uri http://hdl.handle.net/1811/11386 dc.description Author Institution: en_US dc.description.abstract Various examples of perturbations in the vibration-rotation-torsion energy levels of an ethane molecule exhibiting internal rotation splittings are discussed, both from the point of view of the point group $D_{3d}$, appropriate when internal rotation tunneling effects cannot be observed, and from the point of view of the group $G_{36}{^\dag}$, appropriate when internal rotation tunneling in ethane leads to observable splittings in the spectrum. It is found for perturbations allowed in both $D_{3d}$ and $G_{36}{^\dag}$, that each of the two torsional components of the perturbed $D_{3d}$ vibration-rotation level can in principle interact with a ""corresponding"" torsional component in the perturbing vibration-rotation level. It is found for perturbations forbidden in $D_{3d}$ but allowed in $G_{36}{^\dag}$, which all occur between $D_{3d}$ vibrational levels of different g,u parity, that only one of the two torsional components of the perturbed $D_{3d}$ vibration-rotation level can interact with a corresponding torsional, component in the perturbing vibration-rotation level. Some of the perturbations examined give intensity to otherwise forbidden transitions in such a way that perturbation-induced transitions can be used in conjunction with normally allowed transitions to determine the sum of the internal rotation splitting fro two rotational levels differing in K by three units. en_US dc.format.extent 137717 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title PERTURBATIONS IN THE VIBRATION-ROTATION-TORSION ENERGY LEVELS OF AN ETHANE MOLECULE EXHIBITING INTERNAL ROTATION SPLITTINGS en_US dc.type article en_US
﻿