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Table 2 Activation parameters (∆S, ∆H, ∆G and ln A) at 18 °C for the reaction between (1), (2) and NH compounds

From: Structural effects on kinetics and a mechanistic investigation of the reaction between DMAD and N–H heterocyclic compound in the presence of triphenylarsine: spectrophotometry approach

 

∆H kJ mol−1

∆S kJ mol−1K−1

T∆ S kJ mol−1

E aa kJ mol−1

E ba kJ mol−1

A M−1min−1

Arrhenius Eq. 2. and Eyring Eq. 3

17.4 ± 0.5

−175.8 ± 1.7

−51.17

19.9 ± 0.5

19.8 ± 0.5

1.1 × 104

  1. ∆G = 68.59 ± 1.02 at 18 °C
  2. aFrom Arrhenius Eq. 2
  3. bFrom equation Ea = ∆H +RT