University of Illinois Urbana-Champaign

IAM(-like) tunneling matrix formalism for one- and two-methyl-top molecules based on the extended permutation-inversion group idea and its application to the analyses of the methyl-torsional rotational spectra

Kobayashi, Kaori

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https://hdl.handle.net/2142/91168

Description

Title
IAM(-like) tunneling matrix formalism for one- and two-methyl-top molecules based on the extended permutation-inversion group idea and its application to the analyses of the methyl-torsional rotational spectra
Author(s)
Kobayashi, Kaori
Contributor(s)
  • Fujitake, Masaharu
  • Ohashi, Nobukimi
Issue Date
2016-06-21
Keyword(s)
Spectroscopy of Large Amplitude Motions
Abstract
Recently we reanalyzed the microwave absorption spectra of the trans-ethyl methyl ether molecule, state by state, in the ground vibrational, O-methyl torsional, C-methyl torsional and skeletal torsional states with the use of an IAM-like tunneling matrix formalism based on an extended permutation-inversion (PI) group idea, whose results appeared in Journal of Molecular Spectroscopy recently. Since a single rho-axis does not exist in trans-ethyl methyl ether that has two methyl-tops and the IAM formalism is not available as in the case of the one methyl-top molecule, we adopted instead an IAM-like (in other word, partial IAM) formalism. We will show the outline of the present formalism and the results of the spectral analyses briefly. We also would like to review the IAM formalism for the one top molecules based on the extended PI group, and show the result of the application to the spectral analysis.\\ If possible, we would like to compare the IAM and IAM-like formalisms based on the extended PI group with the ERHAM formalism developed by Groner, especially, in the form of Hamiltonian matrix elements, and discuss about similarity and difference.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Language
En
Permalink
http://hdl.handle.net/2142/91168
Copyright and License Information
Copyright 2016 by the authors

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Abstracts & Presentations - 2016 International Symposium on Molecular Spectroscopy PRIMARY