Rhodium(III) bromide
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| Other names
Rhodium tribromide
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.036.064 |
| EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| RhBr3 | |
| Molar mass | 342 g/mol |
| Appearance | red-brown solid[1] |
| soluble in water, methanol, ethanol | |
| Related compounds | |
Other anions
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Rhodium(III) fluoride, Rhodium(III) chloride, 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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Rhodium(III) bromide refers to inorganic compounds of the formula RhBr3(H2O)n where n = 0 or approximately three. Both forms are brown solids. The hydrate is soluble in water and lower alcohols. It is used to prepare rhodium bromide complexes.[2] Rhodium bromides are similar to the chlorides, but have attracted little academic or commercial attention.
Structure
[edit]Rhodium(III) bromide adopts the aluminium chloride crystal structure.[3][4]
Reactions
[edit]Rhodium(III) bromide is a starting material for the synthesis of other rhodium halides. For example, it reacts with bromine trifluoride to form rhodium(IV) fluoride and with aqueous potassium iodide to form rhodium(III) iodide. Like most other rhodium trihalides, anhydrous RhBr3 is insoluble in water.[1] The dihydrate RhBr3·2H2O forms when rhodium metal reacts with hydrochloric acid and bromine.[1]
References
[edit]- ^ a b c Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1119–1120. ISBN 978-0-08-037941-8.
- ^ Osborn, J. A.; Wilkinson, G. (1967). "Tris(triphenylphosphine)halorhodium(I)". Inorganic Syntheses. Vol. 10. p. 67. doi:10.1002/9780470132418.ch12. ISBN 978-0-470-13169-5.
- ^ Brodersen, K.; Thiele, G.; Recke, I. (1968). "Strukturuntersuchungen an Rhodiumhalogeniden". J. Less-Common Met. 14 (1): 151–152. doi:10.1016/0022-5088(68)90214-2.
- ^ "ICSD Entry: 28245 Br3 Rh". Cambridge Structural Database: Access Structures. Cambridge Crystallographic Data Centre. Retrieved 2021-04-19.