Chromates react with hydrogen peroxide, giving products in which peroxide, O²⁻
₂, replaces one or more oxygen atoms.
In acid solution the unstable blue peroxo complex Chromium(VI) oxide peroxide, CrO(O₂)₂, is formed; it is an uncharged covalent molecule, which may be extracted into ether.
Addition of pyridine results in the formation of the more stable complex CrO(O₂)₂py.
Chromates react with hydrogen peroxide, giving products in which peroxide, O²⁻
₂, replaces one or more oxygen atoms. In acid solution the unstable blue peroxo complex Chromium(VI) oxide peroxide, CrO(O₂)₂, is formed; it is an uncharged covalent molecule, which may be extracted into ether. Addition of pyridine results in the formation of the more stable complex CrO(O₂)₂py.
Chromate and dichromate