Abstract
The synthesis and characterization of K3[Ru(C2O4)3]•4H2O (C2O42 = oxalato anoin) complex are described, and its redox properties (in buffer solution of pH = 12) have been investigated. This complex is used for in situ generation of oxoruthenates complexes which have been characterized by electronic spectroscopy. Reaction of K3[Ru(C2O4)3]•4H2O with excess S2O82 in molar KOH generates trans-[RuO3(OH)2]2/S2O82 reagent while with excess BrO3 in molar Na2CO3 generates [RuO4]/BrO3 reagent. Avoiding the direct use of [RuO4] the organic-soluble (n-Pr4N)+[RuO4], (TPAP) has been isolated by reaction of K3[Ru(C2O4)3]•4H2O with excess BrO3 in molar carbonate and n-Pr4NOH. In a mixture of H2O/CCl4 ruthenium tetraoxide can be generated by reaction of K3[Ru(C2O4)3]•4H2O with excess IO4. The catalytic activities of oxoruthenates that have been made from K3[Ru(C2O4)3]•4H2O towards the oxidation of benzyl alcohol, piperonyl alcohol, benzaldehyde and benzyl amine at room temperature have been studied. KCI Citation Count: 8