Kinetics of Reduction of Co(NH3)5Cl2+ and cis- and trans-Co(en)2Cl2+ by Ti(III).

摘要

The variation of rate with H+ for reduction of three Co(III) oxidants by Ti(III) yields the following second-order rate constants (M-1 sec-1, 25.2 deg) for reduction by TiOH2+ and Ti3+: Co(NH3)5Cl2+, 0.48 <0.001; cis-Co(en)2Cl2+, 0.75, 0.002; trans-Co(en)2Cl2+2.8, 0.009. The influence of geometry of the oxidant is less than that expected on the basis of related systems. (Author)