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Enhancement of the direct13C-1H coupling constant upon physical approximation of the proton and heteroatom in N-vinylheterocycles

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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    The addition contribution of the unshared electron pair of the heteroatom to the direct13C-1H coupling constant markedly increases upon approximation of the hydrogen atom and heteroatom to a distance less than the sum of their van der Waals radii.

  2. 2.

    An effect of the unshared electron pair on the direct13C-1H coupling constant in the case of physical approximation of the proton and heteroatom is found in the case of nonbonding overlap of the electron cloud of the unshared electron pair of the heteroatom and the s orbital of the hydrogen atom.

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Authors and Affiliations

  1. Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, Russia

    A. V. Afonin, A. V. Vashchenko, D. K. Danovich, B. V. Trzhtsinskaya, L. V. Baikalova & E. V. Apakina

Authors
  1. A. V. Afonin
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  2. A. V. Vashchenko
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  3. D. K. Danovich
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  4. B. V. Trzhtsinskaya
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  5. L. V. Baikalova
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  6. E. V. Apakina
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1676–1679, July, 1989.

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Afonin, A.V., Vashchenko, A.V., Danovich, D.K. et al. Enhancement of the direct13C-1H coupling constant upon physical approximation of the proton and heteroatom in N-vinylheterocycles. Russ Chem Bull 38, 1538–1541 (1989). https://doi.org/10.1007/BF00978455

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  • DOI: https://doi.org/10.1007/BF00978455

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