Skip to main content
SpringerLink
Log in

The rotatory dispersion of benzil

  • Published:
Proceedings of the Indian Academy of Sciences - Section A Aims and scope Submit manuscript

Summary

The paper reports a study of the rotatory dispersion and the ultraviolet absorption spectrum of crystalline benzil. Transmission spectra have been photographed with varying thicknesses of the crystal. Even with the thinnest specimens (0.02 mm.) there is an almost complete cut off in the transmitted intensity beyond 3400 Å marking the presence of an intense absorption band farther out in the ultraviolet. There is another comparatively feeble absorption which extends from 4500 Å onwards into the shorter wavelength region of the spectrum with a maximum at, 3900 Å. This band is markedly pleohroic. The rotatory dispersion has been measured from 9000 Å in the infrared upto 3600 Å in the ultraviolet right through the absorption band. A specimen of 0.03 mm. thick had to be used in order to penetrate the band. The crystal exhibits anomalous rotatory dispersion in the region of absorption. The one-term rotatory dispersion formula ρ2=6·27 λ2/λ2−(0·24)2]2 fits the data quite well except in the immediate vicinity of the absorption band. The temperature variation of the rotatory power has been measured for three wavelengths in the visible.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Bryant, W. M. D...J. Amer. Chem. Soc., 1943,65, 96.

    Article  Google Scholar 

  2. Caldwell and Le Fevre ..J. Chem. Soc., 1939, 1614–22.

  3. Chandrasekhar, S...Proc. Ind. Acad. Sci., 1952,35A, 103; 1952,36A, 118; 1953,37A, 458; 1953,37A, 468; 1953,37A, 697.

    MathSciNet  Google Scholar 

  4. Des Cloizeaux..Comp. Rend., 1869,68, 308; 1870, 70,1209.

    Google Scholar 

  5. Ganguly and Choudhury..J. Chem. Phys., 1953,21, 554.

    Article  Google Scholar 

  6. International Critical Tables, 1930.

  7. Jelley, E. E...Ind. Eng. Chem. Anals. Ed., 1941,13, 196.

    Article  Google Scholar 

  8. Knaggs and Lonsdale..Nature, 1939,143, 1023.

    Article  Google Scholar 

  9. Krishnan, Guha and Banerjee..Phil. Trans., 1933,231A, 247.

    Google Scholar 

  10. Lonsdale and Smith..Proc. Roy. Soc., 1942,179A, 8.

    Google Scholar 

  11. Mann and Thompson..Ibid., 1951,211A, 168.

    Google Scholar 

  12. Subrahmanian, R. V. .. 1942,14A, 445.

Download references

Author information

Authors and Affiliations

  1. Memoir No. 51 of the Raman Research Institute, Bangalore

    S. Chandrasekhar

Authors
  1. S. Chandrasekhar
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Chandrasekhar, S. The rotatory dispersion of benzil. Proc. Indian Acad. Sci. 39, 243–253 (1954). https://doi.org/10.1007/BF03047144

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03047144

Keywords

Search

Navigation