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.
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.
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.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 61–68, January, 1975.
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Prokof'ev, E.P., Krasnaya, Z.A. 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. Russ Chem Bull 24, 53–58 (1975). https://doi.org/10.1007/BF00926291
- Free Energy
- Systematic Error