Raman spectra and molecular configurations of solid ethylene dihalides

  • San-Ichiro Mizushima
  • Yonezo Morino


The disappearance of many Raman lines of ethylene dihalides on solidification, which was the most important result of our previous experiment, acquired further confirmation by the more accurate measurement of the present experiment. It was shown by the calculation of normal vibrations as well as by the study of isotopic effect that practically all the molecules of solid ethylene dihalides assume thetrans-form. If, therefore, the thermal transitions observed for these solids (−65°C. for C2H4Cl2 and −24°C. for C2H4Br2) are caused by the onset of molecular rotation, this must take place about only one axis,i.e., that of the zigzag X−C−C−X chain. Such a rotation in one dimension does not contradict the existence of the crystal forces which keep the molecule of the solid in a nearly puretrans-state and is consistent with the small values of heat of transition estimated in thermal measurements.


Thermal Transition Raman Line Liquid Line Normal Vibration Molecular Rotation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Mizushima, Morino and Noziri,Sci. Papers, Inst. Phys. Chem. Research (Tokyo). 1936,29, 63 and 188.Google Scholar
  2. 2.
    Mizushima, Morino and Kubo,Physik. Z., 1937,38, 459.Google Scholar
  3. 3.
    Mizushima and Morino,Sci. Papers, Inst. Phys. Chem. Research (Tokyo), 1934,26, 1.Google Scholar
  4. 5.
    White and Morgan,J. Chem. Phys., 1937,5, 655.CrossRefGoogle Scholar
  5. 6.
    Sirkar and Gupta,Ind. J. Phys., 1938,12, 35 have recently observed only one line of the frequency of 60 cm.−1 for solid ethylene dichloride at the temperature of liquid oxygen.Google Scholar
  6. 7.
    Wibaut,Rec. trav. chim., 1931, 50,313.Google Scholar
  7. 8.
    Meyer,Z. Phys. Chem., 1930,B 8, 27.Google Scholar
  8. 9.
    Smyth, Dornte and Wilson,J. Am. Chem. Soc., 1931,53, 4242.CrossRefGoogle Scholar
  9. 10.
    Zahn,Phys. Rev., 1931,38, 521.CrossRefGoogle Scholar
  10. 11.
    Greene and Williams,ibid., 1932,42, 119.CrossRefGoogle Scholar
  11. 12.
    Mizushima and Higasi,Proc. Imp. Acad. Tokyo, 1932,8, 482.Google Scholar
  12. 13.
    Mizushima, Morino and Higasi,Physik. Z., 1934,35, 905;Sci. Papers, Inst. Phys. Chem. Research (Tokyo), 1934,25, 159.Google Scholar
  13. 14.
    Ehrhardt,Physik. Z., 1932,33, 605.Google Scholar
  14. 15.
    Morino,Bull. Chem. Soc., Japan, 1938,13, 189.CrossRefGoogle Scholar
  15. 16.
    Redlich,Z. Phys. Chem., 1935,B 28, 371.Google Scholar
  16. 17.
    Quoted by Ingold and co-workers,Nature, 1935,135, 1033.Google Scholar
  17. 18.
    Pauling,Phys. Rev., 1930,36, 430; see also Smyth,Chem. Rev., 193619, 329.CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 1938

Authors and Affiliations

  • San-Ichiro Mizushima
    • 1
  • Yonezo Morino
    • 1
  1. 1.Chemical Institute, Faculty of ScienceTokyo Imperial UniversityTokyoJapan

Personalised recommendations