Chemistry:Gallium(I) oxide
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Revision as of 23:12, 7 May 2022 by imported>Steve Marsio (over-write)
| Names | |
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| Other names
gallium suboxide
digallium monoxide | |
| Identifiers | |
3D model (JSmol)
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PubChem CID
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| Properties | |
| Ga2O | |
| Molar mass | 155.445 g/mol[1] |
| Appearance | brown powder[1] |
| Density | 4.77 g/cm3[1] |
| Melting point | >800 °C [1] (decomposes) |
| -34·10−6 cm3/mol[2] | |
| Thermochemistry | |
Std enthalpy of
formation (ΔfH⦵298) |
−356.2 kJ/mol[3] |
| Related compounds | |
Other cations
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Boron monoxide Aluminium(I) oxide Indium(I) oxide Thallium(I) oxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Gallium(I) oxide, digallium monoxide or gallium suboxide is an inorganic compound with the formula Ga2O.
Production
Gallium(I) oxide can be produced by reacting gallium(III) oxide with heated gallium in vacuum:[4]
- [math]\displaystyle{ \mathrm{Ga_2 O_3 + 4 \ Ga \longrightarrow 3 \ Ga_2 O} }[/math]
It can also be obtained by reacting gallium with carbon dioxide in vacuum at 850 °C.[5]
- [math]\displaystyle{ \mathrm{2 \ Ga + CO_2 \longrightarrow Ga_2O + CO} }[/math]
Gallium(I) oxide is a by-product in the production of gallium arsenide wafers:[6][7]
- [math]\displaystyle{ \mathrm{4 \ Ga + SiO_2 \longrightarrow 2 \ Ga_2O + Si} }[/math]
Properties
Gallium(I) oxide is a brown-black diamagnetic solid which is resistant to further oxidation in dry air. It starts decomposing upon heating at temperatures above 500 °C, and the decomposition rate depends on the atmosphere (vacuum, inert gas, air).[4]
References
- ↑ 1.0 1.1 1.2 1.3 Haynes, William M., ed (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.64. ISBN 1439855110.
- ↑ Haynes, William M., ed (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.133. ISBN 1439855110.
- ↑ Haynes, William M., ed (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 5.12. ISBN 1439855110.
- ↑ 4.0 4.1 Brauer, Georg (1975). Handbuch der Präparativen Anorganischen Chemie. 3. p. 857. ISBN 3-432-02328-6.
- ↑ Emeléus, H. J. and Sharpe, A. G. (1963). Advances in Inorganic Chemistry and Radiochemistry. 5. Academic Press. p. 94. ISBN 008057854-3.
- ↑ Siffert, Paul and Krimmel, Eberhard (2004). Silicon: Evolution and Future of a Technology. Springer. p. 439. ISBN 354040546-1.
- ↑ Chou, L. -J (2007). Nanoscale One-dimensional Electronic and Photonic Devices (NODEPD). The Electrochemical Society. p. 47. ISBN 978-156677574-8.
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