72. H. Hagemann, H. Bill, D. Joly, P. Müller, N. Pautex,
    “Raman investigation of 1,4-cyclohexadiene in the liquid and solid state”
    Spectrochim. Acta, Part A 1985, 41, 751-756.

We have obtained the room temperature Raman spectra of liquid 1,4-cyclohexadiene and its isotopic analogs: C₆H₇D,gem-C₆H₆D₂, trans-C₆H₆D₂ and C₆H₄D₄. Additionally, we have measured the Raman spectra of 1,4-cyclohexadiene as a function of temperature from 5 to 300 K.

The conformation of 1,4-cyclohexadiene is found to be very likely planar in the solid state. The solid—solid phase transition at 192 K reported by calorimetric measurements has been observed and is discussed qualitatively.

DOI : 10.1016/0584-8539(85)80185-9 

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