Polyethylene Glycols as Efficient Catalysts for the Oxidation of Xanthine Alkaloids by Ceric Ammonium Nitrate in Acetonitrile: A Kinetic and Mechanistic Approach

Table 1

Binding constants of [CAN-PEG] at 303°K using Benesi-Hildebrand method.

S. N.	PEG	Benesi-Hildebrand Equation	𝐾	𝜀	−Δ𝐺 (kJ/mol)
1	PEG-200	𝑦=7𝐸−05𝑥+0.052	743	19.23	16.7
2	PEG-300	𝑦=9𝐸−05𝑥+0.055	611	18.18	16.2
3	PEG-400	𝑦=5𝐸−05𝑥+0.071	1420	14.08	18.3