Symmetry and Spectroscopy: Hunt Research Goup, Imperial College LondonIn our final application of group theory, we will investigate the way in which symmetry considerations influence the interaction of light with matter. We have already used group theory to learn about the molecular orbitals in a molecule. In this section we will show that it may also be used to predict which electronic states may be accessed by absorption of a photon. We may also use group theory to investigate how light may be used to excite the various vibrational modes of a polyatomic molecule. Last year, you were introduced to spectroscopy in the context of electronic transitions in atoms.
The rule of mutual exclusion in molecular spectroscopy relates the observation of molecular vibrations to molecular symmetry. It states that no normal modes can be both Infrared and Raman active in a molecule that possesses a centre of symmetry. This is a powerful application of group theory to vibrational spectroscopy , and allows one to easily detect the presence of this symmetry element by comparison of the IR and Raman spectra generated by the same molecule.
27: Spectroscopy: Interaction of Atoms and Molecules with Light
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Skip to search form Skip to main content. Bunker and Frederick A. Bunker , Frederick A. Matsen Published DOI: Gubins Annual Reviews ; B. Lewis Washington University ; A. View PDF.
Symmetry and spectroscopy: an introduction to vibrational and electronic The Electronic Spectra of Some Diatomic Molecules, The Fate of Absorbed.
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Trove: Find and get Australian resources. Higher fullerenes are fullerene molecules consisting of more than 70 carbon atoms. Fabrication of zero or low- cost models of molecules for symmetry - Wheat. The first edition of Molecular Symmetry and Spectroscopy by P. Harris and has been. Of ' symmetry and group theory' of molecules and the last.