Ruthenium tetrachloride
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| Names | |
|---|---|
| Other names Ruthenium(IV) chloride, ruthenium(4+) tetrachloride | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.033.347 |
| EC Number |
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PubChem CID | |
CompTox Dashboard (EPA) | |
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| Properties | |
| Cl4Ru | |
| Molar mass | 242.87 g·mol−1 |
| Related compounds | |
Related compounds | Osmium tetrachloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Ruthenium(IV) tetrachloride is volatile inorganic compound of ruthenium and chlorine with the formula RuCl4.[1][2]
Synthesis[edit]
Synthesis of ruthenium(IV) tetrachloride is formed by the action of chlorine gas on ruthenium(III) chloride at 750 °C:
- RuCl3 + 0.5Cl2 → RuCl4
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:
- ΔH°298 = 36.6 kcal/mol (enthalpy)
- ΔS°298 = 32.8 entropy units (entropy change)
- ΔC°p = -6.6 cal/mol degree (change in heat capacity at constant pressure)
- S°298 = 99.3 entropy units
The degree signs indicate standard state.
Properties[edit]
Ruthenium(IV) tetrachloride decomposes above -30 °C:[3]
- RuCl4 → RuCl3 + 0.5Cl2
References[edit]
- ^ a b Kolbin, N. I.; Ryabov, A. N.; Samoilov, V. M (1963). "Preparation of solid ruthenium tetrachloride". Zhurnal Neorganicheskoi Khimii. 8 (6): 1543–1545.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Bell, Wayne E.; Garrison, M. C.; Merten, Ulrich (March 1961). "THERMODYNAMIC PROPERTIES OF GASEOUS RUTHENIUM CHLORIDES AT HIGH TEMPERATURE1". The Journal of Physical Chemistry. 65 (3): 517–521. doi:10.1021/j100821a029. ISSN 0022-3654.
- ^ Kolbin, N. I.; Samoilov, V. M.; Ryabov, A. N. (1964). "Gaseous ruthenium chlorides". Khim. Redkikh Elementov, Leningr. Gos. Univ.: 50–56.
{{cite journal}}: CS1 maint: multiple names: authors list (link)