Chemistry:Ruthenium tetrachloride
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| Names | |
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| Other names
Ruthenium(IV) chloride, ruthenium(4+) tetrachloride
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| Identifiers | |
3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Cl4Ru | |
| Molar mass | 242.87 g·mol−1 |
| Related compounds | |
Related compounds
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Osmium tetrachloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Ruthenium(IV) tetrachloride is volatile inorganic compound of ruthenium and chlorine with the formula RuCl
4.[1][2]
Synthesis
Synthesis of ruthenium(IV) tetrachloride is formed by the action of chlorine gas on ruthenium(III) chloride at 750 °C:
- RuCl
3 + 0.5Cl
2 → RuCl
4
- RuCl
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)
- = -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
Ruthenium(IV) tetrachloride decomposes above -30 °C:[3]
- RuCl
4 → RuCl
3 + 0.5Cl
2
- RuCl
References
- ↑ 1.0 1.1 Kolbin, N. I.; Ryabov, A. N.; Samoilov, V. M (1963). "Preparation of solid ruthenium tetrachloride". Zhurnal Neorganicheskoi Khimii 8 (6): 1543–1545.
- ↑ Bell, Wayne E.; Garrison, M. C.; Merten, Ulrich (March 1961). "THERMODYNAMIC PROPERTIES OF GASEOUS RUTHENIUM CHLORIDES AT HIGH TEMPERATURE1" (in en). The Journal of Physical Chemistry 65 (3): 517–521. doi:10.1021/j100821a029. ISSN 0022-3654. https://pubs.acs.org/doi/abs/10.1021/j100821a029.
- ↑ Kolbin, N. I.; Samoilov, V. M.; Ryabov, A. N. (1964). "Gaseous ruthenium chlorides". Khim. Redkikh Elementov, Leningr. Gos. Univ.: 50–56.
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