# THE VIBRATIONAL SPECTRA AND STRUCTURE OF 1,4-CYCLOHEXADIENE AND OF 1,4-CYCLOHEXADIENE-$d_{8}$

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/8158

Files Size Format View
1961-S-10.jpg 91.11Kb JPEG image

 Title: THE VIBRATIONAL SPECTRA AND STRUCTURE OF 1,4-CYCLOHEXADIENE AND OF 1,4-CYCLOHEXADIENE-$d_{8}$ Creators: Lord, R. C.; Stidham, Howard D. Issue Date: 1961 Publisher: Ohio State University Abstract: The infrared and Raman spectra of 1,4-cyclohexadiene and of 1,4-cyclohexadiene-$d_{8}$ have been obtained. The Raman spectrum of 1,4-cyclohexadiene reported earlier by Gerding and $Haak^{1}$ has been substantially confirmed. The infrared spectrum reported by these authors is not in good agreement with the results of the present research. It is concluded that 1,4-cyclohexadiene contains a center of symmetry, and that it therefore belongs to one of the point groups $C_{2h}$ or $D_{2h}$. It is not possible rigorously to distinguish these possibilities with the available data. As the evidence seems to favor $D_{2h}$, an assignment of the fundamental frequencies to the normal modes of vibration of the structure of $D_{2h}$, symmetry has been attempted. The assignment satisfies the Teller-Redlich product rule and is reasonably complete. Description: $^{1}$H. Gerding and F. A. Haak, Rec. Trav. Chim. 68, 293 (1949). Author Institution: Spectroscopy Laboratory, Massachusetts Institute of Technology; Department Of Chemistry, University of Massachusetts URI: http://hdl.handle.net/1811/8158 Other Identifiers: 1961-S-10