Ruthenium(IV) tetrachloride is volatile inorganic compound of ruthenium and chlorine with the formula .
Properties Ruthenium(IV) tetrachloride decomposes above -30 °C:
Synthesis 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. The reaction was determined to have the following thermodynamic properties: ΔH°298 = 36.6 kcal/mol (enthalpy) ΔS°298 = 32.8 entropy units (entropy change) = -6.6 cal/mol degree (change in heat capacity at constant pressure) S°298 = 99.3 entropy units
The degree signs indicate standard state.
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