Väävlisulfiid
Väävlisulfiid, also known as sulfur sulfide, is a chemical compound with the formula S. It is a diatomic molecule consisting of two sulfur atoms bonded together. Väävlisulfiid is a relatively unstable molecule and is often found as a transient species in chemical reactions involving sulfur. In its pure form, väävlisulfiid is a colorless gas. It is produced during the combustion of sulfur-containing materials or in high-temperature sulfur vapor. Due to its reactivity, väävlisulfiid readily decomposes into elemental sulfur or reacts with other substances. Its presence is often inferred through spectroscopic analysis or its participation in specific reaction pathways. Väävlisulfiid is not a commonly encountered substance in everyday life and is primarily of interest in specialized chemical research, particularly in the study of sulfur chemistry and reaction mechanisms. It can be considered an allotrope of sulfur, though less stable than the more common cyclic or chain forms.