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Investigation of the structural transformations and properties of o-toluidine in the solid phase by the method of measuring the complex dielectric permeability

  • V. V. Voevodskii
  • V. A. Tolkachev
  • A. D. Milov
  • A. S. Chernobrov
Physical Chemistry
  • 15 Downloads

Conclusions

  1. 1.

    Methods of producing modifications of o-toluidine were studied.

     
  2. 2.

    The rotation of the o-toluidine molecules is frozen out in the crystalline modifications.

     
  3. 3.

    The complex dielectric permeability of o-toluidine is characterized by two regions of dispersion: low-temperature (110–180°K) and high-temperature (190–220°K).

     
  4. 4.

    On the basis of the data obtained it is concluded that the low-temperature region of the dispersion may be due to limited rotation of the NH2 groups or relaxation within the hydrogen-bonded associates. The high-temperature region in supercooled samples is associated with the rotation of o-toluidine molecules, while in the crystalline modifications it is associated with relaxation in defects due to impurities.

     
  5. 5.

    The activation energies and preexponential factors of the relaxation processes were determined.

     

Keywords

Permeability Activation Energy Relaxation Process Preexponential Factor Structural Transformation 
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.

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Literature cited

  1. 1.
    H. W. Fenrick, S. V. Filseth, A. L. Hanson, and J. E. Willard, J. Amer. Chem. Soc.,85, 3731 (1963); V. K. Ermolaev and V. V. Voevodsky, Proceeding of the Second Tihany Symposium on Radiation Chemistry, Akadémiai Kiado, Budapest, 211 (1967); V. V. Voevodskii, DAN SSSR,159, 876 (1964).Google Scholar
  2. 2.
    N. Ya. Buben and I. I. Chkheidze, Zh. Vses. khim. o-va im. D. I. Mendeleeva,11, 228 (1966).Google Scholar
  3. 3.
    Ya. Vensasson, K. Leibler, R. Marx, and H. Szwarc, Bull. Ampere,9eme Annee, Special Issue, 303 (1960); G. O. Philips and P. Baugh, Nature,198, 283 (1963); M. V. Alfimov, V. G. Nikol'skii and N. Ya. Buben, Kinetika i kataliz,5, 268 (1964); L. A. Tikhomirov and N. Ya. Buben, DAN SSSR,163, 414 (1965); V. A. Tochin, V. G. Nikol'skii and N. Ya. Buben, DAN SSSR,168, 360 (1966).Google Scholar
  4. 4.
    C. P. Smyth, Dielectric Behavior and Structure, McGraw-Hill (1955); G. Frelich, Theory of Dielectrics [Russian translation], IL (1960).Google Scholar
  5. 5.
    E. Knoevenagel, Ber. Dtsch. Chem. Ges.,40, 517 (1907).Google Scholar
  6. 6.
    I. V. Ostromisslensky, Z. Phys. Chem.,57, 347 (1907).Google Scholar
  7. 7.
    A. Weisberger, E. Proskauer, J. Riddik, and E. Tups, Organic Solvents [Russian translation], IL, Moscow (1963).Google Scholar
  8. 8.
    M. I. Shakhparonov, Methods of Investigating the Thermal Motion of Molecules and the Structure of Liquids [in Russian], Izd. MGU (1963).Google Scholar
  9. 9.
    G. Klages and P. Knobloch, Z. Naturforsch.,20a, 580 (1965).Google Scholar
  10. 10.
    J. S. Dryden and H. K. Welsh, Trans. Faraday Soc.,60, 2135 (1964).Google Scholar
  11. 11.
    S. K. Gard and C. P. Smyth, J. Phys. Chem.,69, 1294 (1965).Google Scholar
  12. 12.
    C. P. Smyth, J. Chim. Phys.,63, 59 (1966).Google Scholar
  13. 13.
    P. P. Kobeko, Amorphous Substances [in Russian], Izd.-vo AN SSSR (1952).Google Scholar
  14. 14.
    S. S. Upazovskii, Molecular Polymorphism [in Russian], Izd.-vo AN USSR, Kiev (1956).Google Scholar
  15. 15.
    G. P. Mikhailov, Uspekhi khimii,24, 875 (1955); N. I. Shishkin, Z. tekh. fiz.,26, 1461 (1956); Ya. S. Lebedev, Yu. D. Tsvetkov, and V. V. Voevodskii, Kinetika i kataliz,1, 496 (1960).Google Scholar

Copyright information

© Consultants Bureau 1968

Authors and Affiliations

  • V. V. Voevodskii
    • 1
  • V. A. Tolkachev
    • 1
  • A. D. Milov
    • 1
  • A. S. Chernobrov
    • 1
  1. 1.Institute of Chemical Kinetics and CombustionSiberian Division of the Academy of Sciences of the USSRUSSR

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