Oxidation of cyclohexane with molecular oxygen efficiently catalyzed by di-iron(III)-substituted silicotungstate, γ-SiW10{Fe(OH2)}2O38 6-, including radical-chain mechanism

Article abstract of DOI:10.1246/cl.1998.1263

The tetrabutylammonium salt of γ-SiW₁₀{Fe(OH₂)}₂O₃₈ ^6- showed high turnover number of 135-147 for the oxidation of cyclohexane with 1 atm molecular oxygen and the value is of the highest level among silicotungstates with various iron contents and other catalysts reported. Results obtained with radical initiator and scavenger, and the selectivity for oxygenation of adamantane suggest that the reaction involves a radical-chain path.