Ruthenium tetrachloride

Ruthenium tetrachloride is volatile inorganic compound of ruthenium and chlorine with the formula.

Properties

Ruthenium tetrachloride decomposes above -30 °C:

Synthesis

Synthesis of ruthenium 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
ΔS°₂₉₈ = 32.8 entropy units
= -6.6 cal/mol degree
S°₂₉₈ = 99.3 entropy units

The degree signs indicate standard state.