Ruthenium(IV) tetrachloride is volatile inorganic compound of ruthenium and chlorine with the formula RuCl4.

[1][2] Synthesis of ruthenium(IV) tetrachloride is formed by the action of chlorine gas on ruthenium(III) chloride at 750 °C: The RuCl4 is collected on a liquefied air cooled condenser and decomposes above -30 °C.

[1] The reaction was determined to have the following thermodynamic properties: The degree signs indicate standard state.

Ruthenium(IV) tetrachloride decomposes above -30 °C:[3]