BCl3 is an oxidizing agent, BCl3 is a reducing agent.
Reactants:
BCl3 – Boron trichloride
Other names: Boron(III) chloride, Boron chloride, Trichloroborane
Appearance: Colorless gas | fumes in air ; Gas or colourless fuming liquid with pungent odour
Products:
B2Cl4
Names: Diboron tetrachloride
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.]