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Compounds containing Ga–Ga bonds are true gallium(II) compounds, such as GaS (which can be formulated as Ga 2 4+ (S 2−) 2) and the dioxan complex Ga 2 Cl 4 (C 4 H 8 O 2) 2. [1] There are also compounds of gallium with negative oxidation states, ranging from -5 to -1, most of these compounds being magnesium gallides (Mg x Ga y).
Gallium does not occur as a free element in nature, but rather as gallium(III) compounds in trace amounts in zinc ores (such as sphalerite) and in bauxite. Elemental gallium is a liquid at temperatures greater than 29.76 °C (85.57 °F), and will melt in a person's hands at normal human body temperature of 37.0 °C (98.6 °F).
Triethylgallium is the organogallium compound with the formul Ga(C 2 H 5) 3. Also called TEGa, it is a metalorganic source of gallium for metalorganic vapour phase epitaxy (MOVPE) of compound semiconductors. It is a colorless pyrophoric liquid, [2] typically handled with air-free techniques.
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As Ga will not react with N 2 below 1000 °C, the powder must be made from something more reactive, usually in one of the following ways: 2 Ga + 2 NH 3 → 2 GaN + 3 H 2 [61] Ga 2 O 3 + 2 NH 3 → 2 GaN + 3 H 2 O [62] Gallium nitride can also be synthesized by injecting ammonia gas into molten gallium at 900–980 °C at normal atmospheric ...
Trimethylgallium, often abbreviated to TMG or TMGa, is the organogallium compound with the formula Ga(CH 3) 3. It is a colorless, pyrophoric liquid. [ 1 ] Unlike trimethylaluminium , TMG adopts a monomeric structure. [ 2 ]
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