Study of the multipositional conformational exchange in 2,2-dimethyl-1,3-dithiepin and its 5,6-benz analog by two-dimensional NMR spectroscopy

  • K. A. Il'yasov
  • K. M. Enikeev
  • V. V. Klochkov
  • A. V. Aganov
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Conclusions

Two-dimensional NMR spectroscopy was used to establish that the chair ⇄ chair-inversion process in 2,2-dimethyl-1,3-dithiepin and its 5,6-benz derivative is a function of transitions between intermediate boat and twist structures, while the role of direct chair ⇄ chair transitions is small.

Keywords

Spectroscopy Conformational Exchange Twist Structure Direct Chair Chair Transition 

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Literature cited

  1. 1.
    K. A. Il'yasov, V. V. Klochkov, K. M. Enikeev, and A. V. Aganov, Abstracts of the 9th Annual AMPER School [in Russian], Novosibirsk (1987), p. 139.Google Scholar
  2. 2.
    A. V. Aganov, V. V. Klochkov, and Yu. Yu. Samitov, Usp. Khim.,54, 1585 (1985).Google Scholar
  3. 3.
    R. R. Ernst, G. Bodenhausen, and A. Wokaun, Principles of Nuclear Magnetic Resonance in One and Two Dimensions, Clarendon Press, Oxford (1987), p. 490.Google Scholar
  4. 4.
    C. L. Perrin and R. K. Gipe, J. Am. Chem. Soc.,106, 4036 (1984).Google Scholar
  5. 5.
    E. W. Abel, T. P. J. Coston, K. G. Orrell, V. Sik, and D. Stephenson, J. Magn. Reson.,70, 34 (1986).Google Scholar
  6. 6.
    A. Allerhand and E. Thiere, J. Chem. Phys.,45, 902 (1966).Google Scholar
  7. 7.
    V. V. Voevodin, Computational Fundamentals of Linear Algebra [in Russian], Nauka, Moscow (1977), p. 229.Google Scholar
  8. 8.
    G. Favini and A. Nava, Gazz. Chim. Ital.,104, 621 (1974).Google Scholar
  9. 9.
    S. Kabuss, H. G. Schmit, H. Friebolin, and W. Faisst, Org. Magn. Reson.,2, 19 (1970).Google Scholar
  10. 10.
    B. A. Arbuzov, E. N. Klimovitskii, L. K. Yuldasheva, et al., Dokl. Akad. Nauk SSSR,286, 1147 (1986).Google Scholar

Copyright information

© Plenum Publishing Corporation 1990

Authors and Affiliations

  • K. A. Il'yasov
    • 1
    • 2
  • K. M. Enikeev
    • 1
    • 2
  • V. V. Klochkov
    • 1
    • 2
  • A. V. Aganov
    • 1
    • 2
  1. 1.A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan BranchAcademy of Sciences of the USSRRussia
  2. 2.V. I. Ul'yanov (Lenin) Kazan State UniversityRussia

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