Tetranitratoaluminate
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3D model (JSmol) |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| AlN4O12− | |
| Molar mass | 274.998 g·mol−1 |
| Related compounds | |
Other anions |
tetraperchloratoaluminate |
Other cations |
tetranitratoborate |
Related compounds |
pentanitratoaluminate; hexanitratoaluminate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Tetranitratoaluminate is an anion of aluminium and nitrate groups with formula [Al(NO3)4]− that can form salts called tetranitratoaluminates.[1] It is unusual in being a nitrate complex of a light element.
By substituting boron for aluminium tetranitratoborates result. Aluminium can coordinate more nitrates resulting in pentanitratoaluminates and hexanitratoaluminates.
By replacing nitrate with perchlorate, the tetraperchloratoaluminate ion results.
Formation
When hydrated aluminium nitrate reacts with dinitrogen pentoxide it forms a nitronium salt: [NO2]+[Al(NO3)4]−.[2]
A way to make a tetranitratoaluminate salt of a cation is to treat the chloride of the cation and aluminium chloride with liquid dinitrogen tetroxide pure or dissolved in nitromethane. The reaction is started at liquid nitrogen temperatures and then warmed up. Dark red nitrosyl chloride is formed as a byproduct. The byproducts and solvents can then be evaporated. The tetramethylammonium salt can form this way.[3]