Lithium sulfide (Li2S) is a crystalline inorganic compound composed of lithium and sulfur atoms. It exists in both anhydrous and monohydrate forms (Li2S and Li2S·H2O) and possesses a range of properties. Li2S is characterized by its high reactivity and stability, as well as its basic nature and moderate ionization energy. Its physical characteristics include a colorless cubic structure, low melting and boiling points, and high solubility in water. Lithium hydrogen sulfide (LiHS), an intermediate species in the equilibrium with Li2S, plays a role in the compound’s chemical behavior.
