Über Reaktionen oxygenierter Kobalt(II)-Komplexe. IX. Oxydative Eigenschaften von Tetrakis(äthylendiamin)-μ-peroxo-μ-hydroxo-dikobalt(III) |
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| Authors: | Pauline Brü stlein-Banks,Silvio Fallab |
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| Abstract: | Reactions of oxygenated cobalt(II) complexes. IX. Oxidative properties of tetrakis(ethylenediamine)-μ-peroxo-μ-hydroxo-dicobalt(III) 1 VIII s. [1]. [(en)2Co(O2, OH)Co(en)2]3+ ( a ) reacts with I? in acidic aqueous solution according to: CoIII(O2, OH)CoIII + 21? + 5H+ ? 2CoIII + 3H2O + I2. Using I? in excess first order rate constants are obtained which, to a first approximation, are independent of [I?]. Comparison with kinetic data of deoxygenation of [(en)2Co(O2, OH)Co(en)2]3+ under analogous conditions suggests that both reactions have the same rate determining step. The singly bridged species [(en)2(H2O)CoO2Co(H2O) (en)2]4+ is shown to be the reactive intermediate in the iodide oxidation (Schema 2). |
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