A review on the synthesis and liq.-phase selective oxidn. catalysis by ホウ-SiW10{Fe(OH2)}2O386- with O2. This Keggin-type di-Fe-substituted silicotungstate was prepd. by the reaction of the lacunary [ホウ-SiW10O36]8- with Fe(NO3)3 in an acidic aq. soln. and isolated as the Bu4N salt. The synthesized compd. showed the highest turnover no. for the oxidn. of cyclohexane with 1 atm O among Fe- and tri-transition-metal-substituted silicotungstates tested. [on SciFinder(R)]