The reaction between cobalt(II) ions and Pyridine-2-carbaldehyde oxime in aqueous solution

Abstract

Pyridine-2-carbaldehyde oxime reacts with cobaltous ion in aqueous solution according to the equation :                        Co²⁺ + 3LH+^1/2O₂ → CoL₃ + 2H⁺ + ^1/2H₂O₂ In the absence of oxygen the ligand can function as oxidant. The rate of formation of the cobalt(III)product appears to involve the rate- determining dimerization of the deprotonated cobalt(II) complex, CoL⁺. Oxygen has no effect on the rate of reaction.