Study of the temperature dependence of the free energies of activation of rotations around the C = C and C-N bonds in dienic δ-aminocarbonyl compounds by the PMR method

  • E. P. Prokof'ev
  • Zh. A. Krasnaya
Physical Chemistry


  1. 1.

    On the basis of the dependence of the rate constants of processes of rotation around C = C and C-N bonds in dienic δ-aminocarbonyl compounds on the temperature found, the entropies of activation of these processes were calculated.

  2. 2.

    Increasing the temperature by 100° leads to an increase in ΔG C = C of 3 kcal/mole. The dependence of ΔG C = C on the temperature can be neglected in view of the fact that the value of ΔS C = C is close to zero.

  3. 3.

    Methods of calculation are cited, permitting a reduction of the influence of systematic errors in the values of the parameters of activation and an estimation of their magnitude.



Entropy Free Energy Systematic Error 
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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • E. P. Prokof'ev
    • 1
  • Zh. A. Krasnaya
    • 1
  1. 1.N. D. Zelinskii Institute of Organic ChemistryAcademy of Sciences of the USSRMoscow

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