In: Chemistry
What role does the hydrogen peroxide play in the synthesis of a Pentammino Complex of Cobalt(III) Chloride [Co(NH3)5Cl]Cl2, Pentamminenitro- and Nitritro- Cobalt(III) Chloride
Hydrogen peroxide facilitates the oxidation of Co(II) to CO(III). Since, Peroxide is a strong field ligand, it facilitates the oxidation of Co (II), because Co(III) favours to bind with the strong field ligands, to form the low-spin complexes, for high CFSE. Thus, Hydrogen Peroxide is used to ensure complete oxidation of Co(II) by air. This is the role of Hydrogen Peroxide in the synthesis of the given Co(III) complexes from Co(II) salts.