Pentacarbonyl ruthenium is an organic ruthenium compound having the formula Ru(CO)5. It is a colorless, light-sensitive liquid that is easily decarbonylated when allowed to stand at room temperature. It is of academic significance as an intermediate for the synthesis of metal carbonyl complexes.
Pentacarbonyl ruthenium point -22°C. Insoluble in water, soluble in organic solvents. Volatile, it is difficult to produce pure products. It is unstable and easily generates tridecacarbonyl tris[Ru3·(CO)12]. Used as an oxidation catalyst.