| Names | |
|---|---|
| Other names Ruthenium triiodide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.034.226 |
| EC Number |
|
| |
| |
| 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 | |
Otheranions | Ruthenium(III) fluoride Ruthenium(III) chloride Ruthenium(III) bromide |
Othercations | Iron(III) iodide Osmium(III) iodide Technetium(III) iodide Rhodium(III) iodide |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Ruthenium(III) iodide is achemical compound containingruthenium andiodine with the formulaRuI3. It is a black solid.[2]
Ruthenium(III) iodide can be prepared in several ways.[1][3]
The reaction ofruthenium tetroxide with aqueoushydroiodic acid:[4]
Thethermal decomposition of pentaammineruthenium(III) iodide:[3]
Thesalt metathesis reaction of hydratedruthenium(III) chloride withpotassium 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 withoctahedral coordination geometry at ruthenium.[4] There is some doubt about the characterisation of ruthenium(III) iodide and it may be anoxohalide or a hydroxyhalide.[1]
