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Chemical compound From Wikipedia, the free encyclopedia
Gallium(I) oxide, digallium monoxide or gallium suboxide is an inorganic compound with the formula Ga2O.
Names | |
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Other names
gallium suboxide digallium monoxide | |
Identifiers | |
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UNII | |
CompTox Dashboard (EPA) |
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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 |
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).
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Gallium(I) oxide can be produced by reacting gallium(III) oxide with heated gallium in vacuum:[4]
It can also be obtained by reacting gallium with carbon dioxide in vacuum at 850 °C.[5]
Gallium(I) oxide is a by-product in the production of gallium arsenide wafers:[6][7]
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]
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