Ruthenium tetrachloride
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| ImageFile =
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| IUPACName =
| OtherNames = Ruthenium(IV) chloride, ruthenium(4+) tetrachloride
| Section1 = {{Chembox Identifiers
| CASNo = 13465-52-6
| PubChem = 44145691
| ChemSpiderID = 14807928
| EINECS = 236-697-5
| DTXSID = 50928705
| SMILES = [Cl-].[Cl-].[Cl-].[Cl-].[Ru+4]
| StdInChI= 1S/4ClH.Ru/h4*1H;/q;;;;+4/p-4
| StdInChIKey= IREVRWRNACELSM-UHFFFAOYSA-J
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| Section2 = {{Chembox Properties
| Ru=1|Cl=4
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| Section4 = {{Chembox Structure
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| Section7 = {{Chembox Hazards
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| Section6 = {{Chembox Related
| OtherCompounds = Osmium tetrachloride
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Ruthenium(IV) tetrachloride is volatile inorganic compound of ruthenium and chlorine with the formula {{chem2|RuCl4}}.{{Cite journal |last=Kolbin, N. I.; Ryabov, A. N.; Samoilov, V. M |year=1963 |title=Preparation of solid ruthenium tetrachloride |journal=Zhurnal Neorganicheskoi Khimii |volume=8 |issue=6 |pages=1543–1545}}{{Cite journal |last1=Bell |first1=Wayne E. |last2=Garrison |first2=M. C. |last3=Merten |first3=Ulrich |title=THERMODYNAMIC PROPERTIES OF GASEOUS RUTHENIUM CHLORIDES AT HIGH TEMPERATURE1 |date=March 1961 |url=https://pubs.acs.org/doi/abs/10.1021/j100821a029 |journal=The Journal of Physical Chemistry |language=en |volume=65 |issue=3 |pages=517–521 |doi=10.1021/j100821a029 |issn=0022-3654}}
Synthesis
Synthesis of ruthenium(IV) tetrachloride is formed by the action of chlorine gas on ruthenium(III) chloride at 750 °C:
::{{chem2|RuCl3 + 0.5Cl2 -> RuCl4}}
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)
- {{not a typo|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
Ruthenium(IV) tetrachloride decomposes above -30 °C:{{Cite journal |last=Kolbin, N. I.; Samoilov, V. M.; Ryabov, A. N. |year=1964 |title=Gaseous ruthenium chlorides |journal=Khim. Redkikh Elementov, Leningr. Gos. Univ. |pages=50–56}}
::{{chem2|RuCl4 -> RuCl3 + 0.5Cl2}}
References
{{Reflist}}
{{Ruthenium compounds}}
{{Chlorides}}