Gallium trichloride
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| Gallium trichloride | |
|---|---|
| Systematic name | Gallium trichloride |
| Molecular formula | GaCl3 |
| Molar mass | 179.03 |
| Appearance | colourless crystals |
| CAS number | 13450-90-3 |
| Density and phase | 2.47 g/cm3 |
| Solubility | Water (with hydration) most organic solvents |
| Melting point | 78 °C |
| boiling point | 201 °C |
| Coordination geometry |
tetrahedral at Ga in solid |
| MSDS | ? |
| R and S statements | R = 14-34; S = 26-27-28-36/37/39-45 |
| RTECS number | LW9100000 |
Gallium trichloride is the chemical compound with the formula GaCl3. Solid gallium trichloride exists as a dimer with the formula Ga2Cl6.[1] It is colourless and soluble in virtually all solvents, which is remarkable. It is the main precursor to most derivatives of gallium and a reagent in organic synthesis.[2]
In general gallium trichloride is used as a Lewis acid that is milder than aluminium trichloride. Gallium is easier to reduce, and Ga2Cl4 is known whereas the corresponding Al2Cl4 is not. The coordination chemistry of Ga(III) and Fe(III) are similar, and gallium(III) compounds have been used as diamagnetic analogues of ferric compounds.
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