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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The Spectrum of Cyclopentanone

Howard-Lock, Helen Elaine 09 1900 (has links)
The infrared, Raman and ultraviolet spectra of cyclopentanone, cyclopentanone -α,α,α',α'-d₄ and cyclopentanone-d₈ have been studied. The high resolution ultraviolet absorption spectra of the three isotopic species have been analysed in detail. The electronic transition has been identified as a single-singlet transition associated with ṉ→π* orbital electron promotion. The vibrational and rotational structures accompanying this electronic transition have been analysed and the results are in agreement with theoretical predictions. The geometry of the molecule in both ground and excited states has been calculated. In the excited state conformation, the oxygen atom is bent out of the plane of the three adjacent carbon atoms; there is a potential barrier of 705cm⁻¹ with respect to the oxygen out-of-plane bending vibration in the upper state. / Thesis / Doctor of Philosophy (PhD)

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