Kinetics and Mechanism of meso-Tetraphenylporphyrin Iron(III) Chloride Catalysed Oxidation of Indole-3-Acetic Acid by Peroxomonosulphate

Table 4

Effect of dielectric constant on the reaction rate at 303 K.

CH3CN : H2O	𝐷^𝑎	𝑘obs × 10^4 (s^−1)
70 : 30	49.71	0.68
60 : 40	53.83	0.96
50 : 50	57.95	1.52
40 : 60	62.06	2.89
30 : 70	66.18	5.47

[oxone] = 5.0 × 10⁻⁴ mol dm⁻³; [IAA] = 1.0 × 10⁻² mol dm⁻³; [TPP] = 4.0 × 10⁻⁸ mol dm⁻³; 𝐷^𝑎: values are calculated from the values of pure solvent.