Rhenium(IV) oxide
(Redirected from Rhenium dioxide)
| Names | |
|---|---|
| IUPAC name
Rhenium(IV) oxide
| |
| Other names
Rhenium dioxide
| |
| Identifiers | |
3D model (JSmol)
|
|
| ChemSpider | |
| ECHA InfoCard | Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value). Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value). |
| EC Number |
|
| E number | Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value). |
PubChem CID
|
|
CompTox Dashboard (EPA)
|
|
| |
| |
| Properties | |
| ReO2 | |
| Molar mass | 218.206 g/mol |
| Appearance | gray orthorhombic crystals |
| Density | 11.4 g/cm3[1] |
| Melting point | decomposes at 1000 °C[2] |
| insoluble | |
| Solubility in alkali | insoluble |
| +44.0·10−6 cm3/mol | |
| Structure | |
| Orthorohmbic, oP12 | |
| Pbcn, No. 60 | |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Safety data sheet (SDS) | Aldrich MSDS |
| Related compounds | |
Other anions
|
Rhenium(VII) oxide Rhenium(III) oxide Rhenium(III) chloride |
Other cations
|
manganese(IV) oxide Technetium(IV) oxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Rhenium(IV) oxide or rhenium dioxide is the inorganic compound with the formula ReO2. This gray to black crystalline solid is a laboratory reagent that can be used as a catalyst. It adopts the rutile structure.
Synthesis and reactions
[edit | edit source]It forms via comproportionation:[3]
- 2 Re2O7 + 3 Re → 7 ReO2
Single crystals are obtained by chemical transport, using iodine as the transporting agent.:[4]
- ReO2 + I2 ⇌ ReO2I2
At high temperatures it undergoes disproportionation:
- 7 ReO2 → 2 Re2O7 + 3 Re
It forms rhenates with alkaline hydrogen peroxide and oxidizing acids.[5] In molten sodium hydroxide it forms sodium rhenate:[6]
- 2 NaOH + ReO2 → Na2ReO3 + H2O
References
[edit | edit source]- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ G. Glemser "Rhenium (IV) Oxide" Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1480.
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ G. Glemser "Sodium Rhenate (IV)" Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 1483.