Gallium(III) fluoride
Gallium(III) fluoride (GaF3) is a chemical compound. It is a white solid that melts under pressure above 1000 °C but sublimes around 950 °C. It has the FeF3 structure where the gallium atoms are 6-coordinate. GaF3 can be prepared by reacting F2 or HF with Ga2O3 or by thermal decomposition of (NH4)3GaF6. GaF3 is virtually insoluble in water. Solutions of GaF3 in HF can be evaporated to form the trihydrate, GaF3·3H2O, which on heating gives a hydrated form of GaF2(OH). Gallium(III) fluoride reacts with mineral acids to form hydrofluoric acid.
view along the a axis | view along the c axis | Ga coordination | F coordination |
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Other names
gallium trifluoride | |
Identifiers | |
3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.029.094 |
EC Number |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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SMILES
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Properties | |
GaF3 | |
Molar mass | 126.718 g/mol |
Appearance | white powder |
Density | 4.47 g/cm3 |
Melting point | 800 °C (1,470 °F; 1,070 K) |
Boiling point | 1,000 °C (1,830 °F; 1,270 K) |
0.0002 g/100 mL | |
Structure | |
Rhombohedral, hR24 | |
Space group |
R-3c, No. 167 |
Hazards | |
GHS labelling: | |
Warning | |
H302, H312, H332 | |
P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P312, P322, P330, P363, P501 | |
NFPA 704 (fire diamond) |
3
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references |
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