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The dipole moment and structure of pyrones

2.6 Dimethyl-γ-pyrone, xanthone and coumarin

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Summary

  1. (1)

    The moments of 2·6 dimethyl-γ-pyrone, xanthone, and coumarin have been determined in benzene solutions at 10°, 20°, 30° and 40°C. The values for 20° are 4·48, 2·93 and 4·51 respectively.

  2. (2)

    The high moments for these pyrones are due to the state of resonance in which they exist, between the unexcited states of low moments and excited states of high moments.

  3. (3)

    The difference in value between the moments of dimethyl-γ-pyrone and xanthone must be due to the greater number of unexcited parent states for the latter.

  4. (4)

    The small difference between the calculated and observed moments for coumarin is due to the moments of some of the excited phases being in the opposite sense to the normal value.

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Literatur

  1. Beilstein,Handbuch der Organische Chemie, 4th Edition, Band XVII, 1933, p 268.

    Google Scholar 

  2. C. S. Gibson and J. L. Simonsen,Jour. Chem. Soc., 1928, 2307.

  3. A. Bayer,Ber., 1910,43, 2337.

    Google Scholar 

  4. A. A. Boon, F. J. Wilson and I. M. Heilbron,Jour. Chem. Soc., 1914,105, 2177. A. Hantsch,Ber., 1919,52, 1535. R. C. Gibbs, J. R. Johnson and E. C. Hughes,Jour. Amer. Chem. Soc., 1930,52, 4895.

    Google Scholar 

  5. R. Robinson,Outline of an Electrochemical Theory of Course of Organic Reactions. Institute of Chemistry Lecture, 1932.

  6. L. Pauling and J. Sherman,Jour. Chem. Phys., 1933,1, 605. L. Pauling, L. O. Brockway and J. Y. Beach,Jour. Amer. Chem. Soc., 1935,57, 2705.

    Google Scholar 

  7. F. Arndt and B. Eistert,Zeit. Physik. Chem., (B), 1935,31 125.

    Google Scholar 

  8. E. C. E. Hunter and J. R. Partington,Jour. Chem. Soc., 1934, 87. F. Arndt, G. T. O. Martin and J. R. Partington,ibid. Jour. Chem. Soc., 1934, 87.

  9. M. A. Govinda Rau and B. N. Narayanaswamy,Zeit. Physik. Chem., (B), 1934,26, 23.

    Google Scholar 

  10. K. P. Schweimer and L. PungsHochfrequenztechn und Elektroak, 1934,43, 181.

    Google Scholar 

  11. M. A. Govinda Rau and B. N. Narayanaswamy,Proc. Ind. Acad. Sci., 1935,1, 489.

    Google Scholar 

  12. E. Bergmann and A. Weizmann,Trans. Far. Soc., 1936,32, 1327.

    Article  Google Scholar 

  13. F. Anderlini,Gass. Chim. Ital., 1895,25, ii, 142.

    Google Scholar 

  14. L. E. Sutton,Trans. Far. Soc. 1934,30, 793.

    Article  Google Scholar 

  15. E. C. E. Hunter and J. R. Partington,Jour. Chem. Soc., 1934, 87.

  16. M. A. Govinda Rau,Curr. Science, 1936,5, 132.

    Google Scholar 

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Authors and Affiliations

  1. Department of Physics, Indian Institute of Science, Bangalore

    M. A. Govinda Rau

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  1. M. A. Govinda Rau
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Rau, M.A.G. The dipole moment and structure of pyrones. Proc. Indian Acad. Sci. (Math. Sci.) 4, 687–697 (1936). https://doi.org/10.1007/BF03045346

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  • DOI: https://doi.org/10.1007/BF03045346

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