Chlorine perchlorate is a chemical compound with the formula Cl₂O₄. This chlorine oxide is an asymmetric oxide, with one chlorine atom in +1 oxidation state and the other +7, with proper formula ClOClO₃. It is produced by the photodimerization of chlorine dioxide (ClO₂) at room temperature by 436 nm ultraviolet light: :2 ClO₂ → ClOClO₃ Chlorine perchlorate can also be made by the following reaction at −45 °C. :CsClO₄ + ClOSO₂F → Cs(SO₃)F + ClOClO₃

Properties

Chlorine perchlorate is a pale greenish liquid. It is less stable than ClO₂ (chlorine dioxide) and decomposes at room temperature to give O₂ ( oxygen), Cl₂ ( chlorine) and Cl₂O₆ ( dichlorine hexoxide): :2 ClOClO₃ → O₂ + Cl₂ + Cl₂O₆ Chlorine perchlorate reacts with metal chlorides to form chlorine and the corresponding anhydrous perchlorate: :CrO₂Cl₂ + 2 ClOClO₃ → 2 Cl₂ + CrO₂(ClO₄)₂ :TiCl₄ + 4 ClOClO₃ → 4 Cl₂ + Ti(ClO₄)₄ :2 AgCl + 2 ClOClO₃ → 2 AgClO₄ + Cl₂

Reactions

Notes

References

{{oxygen compounds Chlorine oxides Acidic oxides Chlorine(VII) compounds Perchlorates