OsmiumIV

OsmiumIV refers to the chemical element osmium in its +4 oxidation state. Osmium is a dense, rare, and hard transition metal belonging to the platinum group. In the +4 oxidation state, osmium typically forms compounds where it has lost four electrons. Common examples of osmium(IV) compounds include osmium dioxide (OsO2) and osmium tetrachloride (OsCl4). Osmium dioxide is a black, insoluble solid. Osmium tetrachloride is a reddish-brown solid that sublimes readily. Osmium(IV) compounds can act as oxidizing agents, though less strongly than osmium in higher oxidation states like osmium tetroxide (OsO4). The chemistry of osmium(IV) is diverse and includes the formation of complexes with various ligands. These complexes can exhibit interesting catalytic properties. Due to osmium's rarity and the toxicity of many of its compounds, especially volatile ones like osmium tetroxide, osmium(IV) compounds are not as widely used industrially as those of some other platinum group metals. Research continues into the potential applications of osmium(IV) complexes in areas such as catalysis and materials science.