Chemistry:Potassium hexabromorhenate
From HandWiki
| Names | |
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| IUPAC name
dipotassium; hexabromo rhenium(2-)
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| Other names
Potassium hexabromorhenate(IV)
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
PubChem CID
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| Properties | |
| Br6K2Re | |
| Molar mass | 743.828 g·mol−1 |
| Appearance | dark red crystals |
| Density | 4.34 g/cm3 |
| reacts with water | |
| Hazards | |
| GHS Signal word | Warning |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Potassium hexabromorhenate is an inorganic chemical compound with the chemical formula K
2ReBr
6.[1][2]
Synthesis
Fusion of rhenium with potassium bromide in a bromine vapor current:
- Re + 2KBr + 2Br
2 → K
2ReBr
6
- Re + 2KBr + 2Br
The effect of hydrobromic acid on a mixture of potassium bromide with rhenium(VI) oxide:[3]
- ReO
2 + 2KBr + 4HBr → K
2ReBr
6 + 2H
2O
- ReO
Reduction of potassium perrenate by potassium iodide in concentrated hydrobromic acid:[3]
- 2KReO
4 + 6KI + 16HBr → 2K
2ReBr
6 + 4KBr + 3I
2 + 8H
2O
- 2KReO
Chemical properties
Potassium hexabromorhenate dissolves in hydrobromic acid to create a red or deep yellow solution.[4]
Reacts with water.
- K
2ReBr
6 + 2H
2O → ReO
2 + 2KBr + 4HBr
- K
Physical properties
The compound forms dark red crystals of cubic system, space group Fm3m.[5]
References
- ↑ Meloche, Villiers W.; Martin, Ronald (November 1956). "Synthesis of Potassium Hexachlororhenate and Potassium Hexabromorhenate" (in en). Journal of the American Chemical Society 78 (22): 5955–5956. doi:10.1021/ja01603a067. ISSN 0002-7863. Bibcode: 1956JAChS..78.5955M. https://pubs.acs.org/doi/10.1021/ja01603a067. Retrieved 25 August 2024.
- ↑ "Potassium Hexabromorhenate". American Elements. https://www.americanelements.com/potassium-hexabromorhenate-16903-70-1.
- ↑ 3.0 3.1 Watt, George W.; Thompson, Richard J.; Gibbons, Jean M. (1963). Potassium Hexachlororhenate(IV) and Potassium Hexabromorhenate(IV). Inorganic Syntheses. VII. pp. 189–192. doi:10.1002/9780470132388.ch51. ISBN 978-0-470-13166-4. https://onlinelibrary.wiley.com/doi/10.1002/9780470132388.ch51. Retrieved 26 August 2024.
- ↑ Kemmitt, R. D. W.; Peacock, R. D. (26 January 2016) (in en). The Chemistry of Manganese, Technetium and Rhenium: Pergamon Texts in Inorganic Chemistry. Elsevier. p. 974. ISBN 978-1-4831-8762-4. https://books.google.com/books?id=c0n-BAAAQBAJ&dq=%22Potassium+hexabromorhenate%22&pg=PA974. Retrieved 25 August 2024.
- ↑ Donnay, Joseph Désiré Hubert (1973) (in en). Crystal Data: Inorganic compounds. National Bureau of Standards. p. 285. https://books.google.com/books?id=5lVCBwmZsLYC&dq=%22Potassium+hexabromorhenate%22&pg=RA6-PA285. Retrieved 25 August 2024.
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