Cl2O7 is an oxidizing agent, Cl2O7 is a reducing agent.
Reactants:
Cl2O7 – Dichlorine heptoxide
Other names: Chlorine(VII) oxide; Perchloric anhydride; (Perchloryloxy)chlorane trioxide
Appearance: Colorless liquid
Products:
Cl2
Names: Chlorine, Molecular chlorine
Appearance: Greenish-yellow compressed liquefied gas with pungent odour ; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]