What is Ni 2S3?

Ni₂S₃, or nickel(III) sulfide, is a chemical compound composed of nickel and sulfur. It typically appears as a black solid and is known for its use in various applications, including as a semiconductor and in catalysis. The compound features nickel in a +3 oxidation state, which is less common compared to the more prevalent +2 state in nickel compounds. Ni₂S₃ can be synthesized through various methods, including the reaction of nickel salts with sulfide sources.