Vibrational spectra and normal vibrations of N-methyl acetamide

  • K. Venkata Ramiah
  • V. Venkata Chalapathi

6. Summary

The variation in the vibrational frequencies of N-methyl acetamide in solutions compared to the frequencies of the pure amide, obtained from infra-red and Raman spectra are discussed. By splitting the molecule into two groups so that C-N is a common bond for both the groups, the normal co-ordinate treatment of N-methyl acetamide is carried out and the fundamental frequencies are calculated. On the basis of these calculations, the band at 990 cm.−1 is assigned to N-CH3 stretch. Using Gordy’s equation and the force constant for the C=O stretch, the bond order of C=O bond is calculated.


Force Constant Rabies Vibrational Spectrum Bond Order Normal Vibration 
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.

7. References

  1. 1.
    Tatsuo Miyazawa, Takehiko Shimanouchi and San Ichiro MuzushimaJ. Chem. Phys., 1958,29, 611.CrossRefGoogle Scholar
  2. 2.
    Puranik, P. G. and Venkata Ramiah, K.Proc. Ind. Acad. Sci., 1961,54, 69.Google Scholar
  3. 3.
    Venkata Ramiah, K. and Venkata Chalapathi, V. Ibid., 1963,58, 233.Google Scholar
  4. 4.
    Decius, J. C...J. Chem. Phys., 1948,16, 1025.CrossRefGoogle Scholar
  5. 5.
    Katz, J. L...Diss. Abst., 1957,17, 2039.Google Scholar
  6. 6.
    Puranik, P. G. and Lalitha SirdeshmukhProc. Ind. Acad. Sci., 1962,56, 115.Google Scholar
  7. 7.
    Isao Suzuki..Bull. Chem. Soc., Japan, 1962,35, 540.CrossRefGoogle Scholar
  8. 8.
    Walter Gordy..J. Chem. Phys., 1946,14, 312.Google Scholar
  9. 9.
    Linus Pauling ..The Nature of the Chemical Bond, Cornell University Press, 1948,64.Google Scholar

Copyright information

© Indian Academy of Sciences 1964

Authors and Affiliations

  • K. Venkata Ramiah
    • 1
  • V. Venkata Chalapathi
    • 1
  1. 1.Department of PhysicsUniversity College of Science, Osmania UniversityHyderabad-7

Personalised recommendations