Names | |
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Other names
Ruthenium triiodide
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Identifiers | |
3D model (JSmol)
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ECHA InfoCard | 100.034.226 |
CompTox Dashboard (EPA)
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Properties | |
RuI3 | |
Density | 5.25 g cm−3 |
sparingly soluble[1] | |
Structure | |
hexagonal[1] | |
Thermochemistry | |
Std molar
entropy (S⦵298) |
−247 J mol−1 K−1[1] |
Std enthalpy of
formation (ΔfH⦵298) |
−159 kJ mol−1[1] |
Related compounds | |
Other anions
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Ruthenium(III) fluoride Ruthenium(III) chloride Ruthenium(III) bromide |
Other cations
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Iron(III) iodide Osmium(III) iodide Technetium(III) iodide Rhodium(III) iodide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ruthenium(III) iodide is a chemical compound containing ruthenium and iodine with the formula RuI3. It is a black solid.[2]
Ruthenium(III) iodide can be prepared in several ways.[1][3]
The reaction of ruthenium tetroxide with aqueous hydroiodic acid:[4]
The thermal decomposition of pentaammineruthenium(III) iodide:[3]
The salt metathesis reaction of hydrated ruthenium(III) chloride with potassium iodide in aqueous solution:[1]
Direct combination of the elements has been reported to succeed under some conditions (350 °C) but not others (500 °C and 20 atm):[1]
Ruthenium(III) iodide adopts an extended structure with octahedral coordination geometry at ruthenium.[4] There is some doubt about the characterisation of ruthenium(III) iodide and it may be an oxohalide or a hydroxyhalide.[1]