Hydroxyaluminium(I), also known as Aluminium(I) hydroxide, is an inorganic chemical with molecular formula AlOH. It consists of aluminium in the +1 oxidation state paired with a single hydroxide. It has been detected as a molecular substance in the envelope of an oxygen-rich red supergiant star, a place where substances containing metals or hydroxides are thought to be rare.[2]
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| Names | |
|---|---|
| IUPAC name Hydroxyaluminium(I) | |
| Identifiers | |
3D model (JSmol) | |
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| Properties | |
| AlOH | |
| Molar mass | 43.989 g·mol−1 |
| Related compounds | |
Other anions | AlSH[1] |
Other cations | GaOH, InOH, TlOH |
Related compounds | Al(OH)2, Al(OH)3 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Production
In the laboratory AlOH can be made by heating aluminium, so that it vapourises into low pressure hydrogen peroxide vapour.[3] Another method is to condense a mixture of aluminium vapour, hydrogen and oxygen with argon into a solid at 10K. Along with AlOH, there are also Al(OH)2, Al(OH)3, HAl(OH)2, cyc-AlO2 and AlOAl molecules formed.[4]
Properties
The bond lengths are, Al-O 1.682 Å, and for O-H 0.878 Å.[3] The rotational constants are B0=15,740.2476 MHz and D0=0.02481 MHz.[3]